31981749 (number)

31981749 is an odd 8-digits composite number following 31981748 and preceding 31981750. In scientific notation, it is written as 3.1981749 × 10^7. The sum of its digits is 42. It has a total of 2 prime factors and 4 positive divisors. There are 21321164 positive integers (up to 31981749) that are relatively prime to 31981749.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 3.1981749 × 10^7
Engineering notation 3.1981749 × 10^6

Prime Factorization of 31981749

Prime Factorization 3 × 10660583

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 31981749
Product of the distinct prime numbers

The prime factorization of 31981749 is 3 × 10660583. Since it has a total of 2 prime factors.

Most popular turbo-numbers

9, 2, 18, 72, 404, 423, 1712, 4361, 35996, 20936, 130810, 100731, 9133966, 8608558, 54755439, 34146951, 783126987, 208037002, 2966786171, 2103234984

Basic calculations (n = 31981749)

Multiplication

n×y
n×2 63963498
n×3 95945247
n×4 127926996
n×5 159908745

Division

n÷y
n÷2 15990874.5
n÷3 10660583
n÷3 7995437.25
n÷5 6396349.8

Exponentiation

ny
n2 1022832269099001
n3 3.2711964899425E+22
n4 1.0461858507102E+30
n5 3.3458853284765E+37

Nth Root

y√n
2√n 5655.2408436777
3√n 317.41984129722
4√n 75.201335384936
5√n 31.694247288348

Divisors of 31981749

1, 3, 10660583, 31981749

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 -31981748
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 31981749 can be divided by 4 positive divisors. The sum of these divisors (counting 31981749) is 1, the average is 0.25.

Base conversion 31981749

Base System Value
2 Binary 1111010000000000010110101
3 Ternary 2020011211201020
4 Quaternary 1322000002311
5 Quinary 31141403444
6 Senary 3101251353
8 Octal 172000265
10 Decimal 31981749
12 Duodecimal a863b59
16 Hexadecimal 1e800b5
20 Vigesimal 9jhe79
36 Base36 j1h9x

Cryptographic Hash Functions

md5 7a15b2fa2a3d66d419485c9ddde40713
sha1 0d1da053dbdee770f09f80270da99258397dd999
sha256 cc5d483a94a11ee6a8694a772a1c0e17cb52c8002b975f17ffda2c546f91339d
sha512 507d929dd4aff7680c55d7d1c7300422f6ebb4c6089216f287f0d603bd06b0be7355fe062ea93fa1274f310f9242ea81a248ee5219302892d2828200bde9125c
ripemd-160 c9d898d8c1f0f47bebd3af5c0d2a5176c3034474

31981749 as geometric shapes

Circle

Radius = n
Diameter 63963498
Circumference 200947255.41471
Area 3.213322342456E+15

Sphere

Radius = n
Volume 1.3702355815003E+23
Surface area 1.2853289369824E+16
Circumference 200947255.41471

Square

Length = n
Perimeter 127926996
Area 1022832269099001
Diagonal 45229023.184212

Cube

Length = n
Surface area 6136993614594006
Volume 3.2711964899425E+22
Space diagonal 55394014.182915

Equilateral Triangle

Length = n
Perimeter 95945247
Area 4.4289936442511E+14
Altitude 27697007.091458

Triangular Pyramid

Length = n
Surface area 4.4289936442511E+14
Volume 3.8551420343866E+21
Height 15076341.061404