31139987 (number)

31139987 is an odd 8-digits composite number following 31139986 and preceding 31139988. In scientific notation, it is written as 3.1139987 × 10^7. The sum of its digits is 41. It has a total of 2 prime factors and 4 positive divisors. There are 30981720 positive integers (up to 31139987) that are relatively prime to 31139987.

Interesting facts

Basic properties

Name

Name thirty-one million one hundred thirty-nine thousand nine hundred eighty-seven

Notation

Scientific notation 3.1139987 × 10^7
Engineering notation 3.1139987 × 10^6

Prime Factorization of 31139987

Prime Factorization 197 × 158071

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 31139987
Product of the distinct prime numbers

The prime factorization of 31139987 is 197 × 158071. Since it has a total of 2 prime factors.

Most popular turbo-numbers

3, 10, 12, 75, 226, 842, 1275, 7551, 25239, 71172, 876919, 581725, 7729907, 7004857, 44369333, 22082706, 330751851, 899082044, 7045295400, 476218166

Basic calculations (n = 31139987)

Multiplication

n×y
n×2 62279974
n×3 93419961
n×4 124559948
n×5 155699935

Division

n÷y
n÷2 15569993.5
n÷3 10379995.666667
n÷3 7784996.75
n÷5 6227997.4

Exponentiation

ny
n2 969698790360169
n3 3.0196407725731E+22
n4 9.4031574402598E+29
n5 2.9281420044864E+37

Nth Root

y√n
2√n 5580.3214065141
3√n 314.61020736553
4√n 74.701548889659
5√n 31.525623555823

Divisors of 31139987

1, 197, 158071, 31139987

4 divisors

τ Total Divisors 4
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -31139986
Sum of the proper positive divisors of n
A Arithmetic Mean 0.25
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 4
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 31139987 can be divided by 4 positive divisors. The sum of these divisors (counting 31139987) is 1, the average is 0.25.

Base conversion 31139987

Base System Value
2 Binary 1110110110010100010010011
3 Ternary 2011121002000212
4 Quaternary 1312302202103
5 Quinary 30432434422
6 Senary 3031234335
8 Octal 166624223
10 Decimal 31139987
12 Duodecimal a5189ab
16 Hexadecimal 1db2893
20 Vigesimal 9ec9j7
36 Base36 ijfrn

Cryptographic Hash Functions

md5 ec20d6eb24ae8e10672c25ebd4ec68e6
sha1 61429749460176489769327e9746f6a345e36ba1
sha256 4ec97e80e8898f2b42ed98e774cd818f6e979e4199a6052051954891cb94a6ee
sha512 76b3f72b3afbdb274f6ac6f510e0744493836e986934a8f2b47231d28ac2f1ffa3548a9a762cfde2ddad3141a89f1506ca29c4c6c972951891a9cf5bffa8500d
ripemd-160 5458f12db254cda571b63761ecd0c392d109478d

31139987 as geometric shapes

Circle

Radius = n
Diameter 62279974
Circumference 195658308.78416
Area 3.0463985959904E+15

Sphere

Radius = n
Volume 1.2648641690128E+23
Surface area 1.2185594383962E+16
Circumference 195658308.78416

Square

Length = n
Perimeter 124559948
Area 969698790360169
Diagonal 44038591.947522

Cube

Length = n
Surface area 5818192742161014
Volume 3.0196407725731E+22
Space diagonal 53936039.631034

Equilateral Triangle

Length = n
Perimeter 93419961
Area 4.1989189323547E+14
Altitude 26968019.815517

Triangular Pyramid

Length = n
Surface area 4.1989189323547E+14
Volume 3.5586807783898E+21
Height 14679530.649174