31387978 (number)

31387978 is an even 8-digits composite number following 31387977 and preceding 31387979. In scientific notation, it is written as 3.1387978 × 10^7. The sum of its digits is 46. It has a total of 4 prime factors and 16 positive divisors. There are 15327936 positive integers (up to 31387978) that are relatively prime to 31387978.

Interesting facts

Basic properties

Name

Name thirty-one million three hundred eighty-seven thousand nine hundred seventy-eight

Notation

Scientific notation 3.1387978 × 10^7
Engineering notation 3.1387978 × 10^6

Prime Factorization of 31387978

Prime Factorization 2 × 53 × 277 × 1069

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 31387978
Product of the distinct prime numbers

The prime factorization of 31387978 is 2 × 53 × 277 × 1069. Since it has a total of 4 prime factors.

Most popular turbo-numbers

3, 3, 87, 84, 100, 337, 4524, 8128, 42236, 69578, 640871, 895368, 5581148, 3909756, 7476641, 69640958, 971015906, 328831675, 2505511988, 5642121463

Basic calculations (n = 31387978)

Multiplication

n×y
n×2 62775956
n×3 94163934
n×4 125551912
n×5 156939890

Division

n÷y
n÷2 15693989
n÷3 10462659.333333
n÷3 7846994.5
n÷5 6277595.6

Exponentiation

ny
n2 985205162928484
n3 3.0923597979486E+22
n4 9.7062921306094E+29
n5 3.0466088385714E+37

Nth Root

y√n
2√n 5602.4974788035
3√n 315.44315889678
4√n 74.849832857552
5√n 31.575676786698

Divisors of 31387978

1, 2, 53, 106, 277, 554, 1069, 2138, 14681, 29362, 56657, 113314, 296113, 592226, 15693989, 31387978

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -31387977
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 31387978 can be divided by 16 positive divisors. The sum of these divisors (counting 31387978) is 1, the average is 0.0625.

Base conversion 31387978

Base System Value
2 Binary 1110111101111000101001010
3 Ternary 2012001200012201
4 Quaternary 1313233011022
5 Quinary 31013403403
6 Senary 3040430414
8 Octal 167570512
10 Decimal 31387978
12 Duodecimal a61840a
16 Hexadecimal 1def14a
20 Vigesimal 9g39ii
36 Base36 ior4a

Cryptographic Hash Functions

md5 68aad0dd17a4d2e14227ce39dc38698d
sha1 2e666999be7b6c1e0db282028b5ffaa62d635b96
sha256 12713f24f06fefb69325883a5e204f92dd0be5e764c29b3516c1d2657834382e
sha512 2e86495f3e8599872728a52a8eaf07a885263e0b96bfb0e11eef4f93a4504a5b52a73a09e6c5114ce867e8cdff1f356af57f3d3fd80960b76717215ea7e739ad
ripemd-160 675e867efd1c469c67b188ce23063217d4a4bdca

31387978 as geometric shapes

Circle

Radius = n
Diameter 62775956
Circumference 197216482.19168
Area 3.0951133021349E+15

Sphere

Radius = n
Volume 1.2953246431322E+23
Surface area 1.2380453208539E+16
Circumference 197216482.19168

Square

Length = n
Perimeter 125551912
Area 985205162928484
Diagonal 44389304.183068

Cube

Length = n
Surface area 5911230977570904
Volume 3.0923597979486E+22
Space diagonal 54365572.642854

Equilateral Triangle

Length = n
Perimeter 94163934
Area 4.2660634951783E+14
Altitude 27182786.321427

Triangular Pyramid

Length = n
Surface area 4.2660634951783E+14
Volume 3.6443809716635E+21
Height 14796434.727689