31991408 (number)

31991408 is an even 8-digits composite number following 31991407 and preceding 31991409. In scientific notation, it is written as 3.1991408 × 10^7. The sum of its digits is 35. It has a total of 6 prime factors and 20 positive divisors. There are 15443904 positive integers (up to 31991408) that are relatively prime to 31991408.

Interesting facts

Basic properties

Name

Name thirty-one million nine hundred ninety-one thousand four hundred eight

Notation

Scientific notation 3.1991408 × 10^7
Engineering notation 3.1991408 × 10^6

Prime Factorization of 31991408

Prime Factorization 2 × 2 × 2 × 2 × 29 × 68947

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 3998926
Product of the distinct prime numbers

The prime factorization of 31991408 is 2 × 2 × 2 × 2 × 29 × 68947. Since it has a total of 6 prime factors.

Most popular turbo-numbers

7, 5, 100, 42, 990, 157, 6459, 6348, 13722, 46500, 634316, 856180, 9710564, 8432068, 58051295, 54051168, 551397424, 561424569, 5959686755, 7249634815

Basic calculations (n = 31991408)

Multiplication

n×y
n×2 63982816
n×3 95974224
n×4 127965632
n×5 159957040

Division

n÷y
n÷2 15995704
n÷3 10663802.666667
n÷3 7997852
n÷5 6398281.6

Exponentiation

ny
n2 1023450185822464
n3 3.2741612462322E+22
n4 1.04745028286E+30
n5 3.3509409358691E+37

Nth Root

y√n
2√n 5656.0947658256
3√n 317.45179337133
4√n 75.207012743664
5√n 31.69616149109

Divisors of 31991408

1, 2, 4, 8, 16, 29, 58, 116, 232, 464, 68947, 137894, 275788, 551576, 1103152, 1999463, 3998926, 7997852, 15995704, 31991408

20 divisors

τ Total Divisors 20
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -31991407
Sum of the proper positive divisors of n
A Arithmetic Mean 0.05
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 20
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 31991408 can be divided by 20 positive divisors. The sum of these divisors (counting 31991408) is 1, the average is 0.05.

Base conversion 31991408

Base System Value
2 Binary 1111010000010011001110000
3 Ternary 2020012022221222
4 Quaternary 1322002121300
5 Quinary 31142211113
6 Senary 3101404212
8 Octal 172023160
10 Decimal 31991408
12 Duodecimal a869668
16 Hexadecimal 1e82670
20 Vigesimal 9jiia8
36 Base36 j1oq8

Cryptographic Hash Functions

md5 5c2aa5f49557a2a56ac9580b0628d951
sha1 ae9ece8e039789c15ce39b09c3d9ee27f01bfd10
sha256 d4da9976ec13eed912524a13be077a54b07f4ad2b7c402a0fb79016c2c0582b1
sha512 be8e12a17ec1af7e194b42ef5c5e39eb6ee6def9de448cd69e7b0f19d446f46efeb3395f5270a68c1d22c25fc0aa51b49409c85cf1e15178c82642fc29914bfe
ripemd-160 5024aef0f971e81cc777aca37aaa6dc4ee87a35e

31991408 as geometric shapes

Circle

Radius = n
Diameter 63982816
Circumference 201007944.70159
Area 3.215263585095E+15

Sphere

Radius = n
Volume 1.3714774557109E+23
Surface area 1.286105434038E+16
Circumference 201007944.70159

Square

Length = n
Perimeter 127965632
Area 1023450185822464
Diagonal 45242683.073011

Cube

Length = n
Surface area 6140701114934784
Volume 3.2741612462322E+22
Space diagonal 55410744.061665

Equilateral Triangle

Length = n
Perimeter 95974224
Area 4.4316693021508E+14
Altitude 27705372.030833

Triangular Pyramid

Length = n
Surface area 4.4316693021508E+14
Volume 3.8586360331817E+21
Height 15080894.35767