31387984 (number)
31387984 is an even 8-digits composite number following 31387983 and preceding 31387985. In scientific notation, it is written as 3.1387984 × 10^7. The sum of its digits is 43. It has a total of 7 prime factors and 40 positive divisors. There are 14661120 positive integers (up to 31387984) that are relatively prime to 31387984.
Interesting facts
- 31387984 has 40 divisors, whose sum is 64870848
- The reverse of 31387984 is 48978313
- Previous prime number is 167
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 43
- Digital Root 7
Name
| Name | thirty-one million three hundred eighty-seven thousand nine hundred eighty-four |
|---|
Notation
| Scientific notation | 3.1387984 × 10^7 |
|---|---|
| Engineering notation | 3.1387984 × 10^6 |
Prime Factorization of 31387984
Prime Factorization 2 × 2 × 2 × 2 × 17 × 167 × 691
Composite number| ω | Distinct Factors | 4 | Total number of distinct prime factors |
|---|---|---|---|
| Ω | Total Factors | 7 | Total number of prime factors |
| rad | Radical | 3923498 | Product of the distinct prime numbers |
The prime factorization of 31387984 is 2 × 2 × 2 × 2 × 17 × 167 × 691. Since it has a total of 7 prime factors.
Most popular turbo-numbers
Basic calculations (n = 31387984)
Multiplication
n×y| n×2 | 62775968 |
|---|---|
| n×3 | 94163952 |
| n×4 | 125551936 |
| n×5 | 156939920 |
Division
n÷y| n÷2 | 15693992 |
|---|---|
| n÷3 | 10462661.333333 |
| n÷3 | 7846996 |
| n÷5 | 6277596.8 |
Exponentiation
ny| n2 | 985205539584256 |
|---|---|
| n3 | 3.0923615713182E+22 |
| n4 | 9.7062995522751E+29 |
| n5 | 3.0466117504602E+37 |
Nth Root
y√n| 2√n | 5602.498014279 |
|---|---|
| 3√n | 315.4431789964 |
| 4√n | 74.849836434551 |
| 5√n | 31.575677993874 |
Divisors of 31387984
40 divisors
| τ | Total Divisors | 40 | Total number of the positive divisors of n |
|---|---|---|---|
| σ | Sum of Divisors | 1 | Sum of all the positive divisors of n |
| s | Aliquot Sum | -31387983 | Sum of the proper positive divisors of n |
| A | Arithmetic Mean | 0.025 | Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n)) |
| G | Geometric Mean | 1 | Returns the nth root of the product of n divisors |
| H | Harmonic Mean | 40 | Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors |
The number 31387984 can be divided by 40 positive divisors. The sum of these divisors (counting 31387984) is 1, the average is 0.025.
Base conversion 31387984
| Base | System | Value |
|---|---|---|
| 2 | Binary | 1110111101111000101010000 |
| 3 | Ternary | 2012001200012221 |
| 4 | Quaternary | 1313233011100 |
| 5 | Quinary | 31013403414 |
| 6 | Senary | 3040430424 |
| 8 | Octal | 167570520 |
| 10 | Decimal | 31387984 |
| 12 | Duodecimal | a618414 |
| 16 | Hexadecimal | 1def150 |
| 20 | Vigesimal | 9g39j4 |
| 36 | Base36 | ior4g |
Cryptographic Hash Functions
| md5 | 2f7bd832fde5c95e922d002e8b7a33e1 |
|---|---|
| sha1 | fd64dbae16d4d64b7f0bf92fbdabaf84868d7fa5 |
| sha256 | 8c10765d1c41eabb0236d94115e323d360f7f3baf283b1b1db691ee5e4c95dda |
| sha512 | b82711fdded980506fa5b280c2d5e749c2db68c7644f4293692480d280c1fd5181b835ee0a4b9aefbe0aea2a64b33fcfc89a1292dbcdd7a8387aa2336a2fca8a |
| ripemd-160 | dee7a4b7b227eb2e3a072f69e93a0f71fe35655e |
31387984 as geometric shapes
Circle
Radius = n| Diameter | 62775968 |
|---|---|
| Circumference | 197216519.89079 |
| Area | 3.0951144854339E+15 |
Sphere
Radius = n| Volume | 1.2953253859596E+23 |
|---|---|
| Surface area | 1.2380457941735E+16 |
| Circumference | 197216519.89079 |
Square
Length = n| Perimeter | 125551936 |
|---|---|
| Area | 985205539584256 |
| Diagonal | 44389312.66835 |
Cube
Length = n| Surface area | 5911233237505536 |
|---|---|
| Volume | 3.0923615713182E+22 |
| Space diagonal | 54365583.035159 |
Equilateral Triangle
Length = n| Perimeter | 94163952 |
|---|---|
| Area | 4.2660651261456E+14 |
| Altitude | 27182791.517579 |
Triangular Pyramid
Length = n| Surface area | 4.2660651261456E+14 |
|---|---|
| Volume | 3.6443830615996E+21 |
| Height | 14796437.556117 |