21031731 (number)

21031731 is an odd 8-digits composite number following 21031730 and preceding 21031732. In scientific notation, it is written as 2.1031731 × 10^7. The sum of its digits is 18. It has a total of 4 prime factors and 16 positive divisors. There are 12002256 positive integers (up to 21031731) that are relatively prime to 21031731.

Interesting facts

Basic properties

Name

Name twenty-one million thirty-one thousand seven hundred thirty-one

Notation

Scientific notation 2.1031731 × 10^7
Engineering notation 2.1031731 × 10^6

Prime Factorization of 21031731

Prime Factorization 189 × 21 × 757 × 7

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21031731
Product of the distinct prime numbers

The prime factorization of 21031731 is 189 × 21 × 757 × 7. Since it has a total of 4 prime factors.

Most popular turbo-numbers

10, 4, 12, 45, 134, 60, 221, 362, 96975, 60495, 749974, 208809, 8825643, 5746825, 5023861, 82184768, 661062352, 554948295, 7823004750, 3019309897

Basic calculations (n = 21031731)

Multiplication

n×y
n×2 42063462
n×3 63095193
n×4 84126924
n×5 105158655

Division

n÷y
n÷2 10515865.5
n÷3 7010577
n÷3 5257932.75
n÷5 4206346.2

Exponentiation

ny
n2 442333708856361
n3 9.3030435768993E+21
n4 1.9565910999062E+29
n5 4.1150497690222E+36

Nth Root

y√n
2√n 4586.0365240587
3√n 276.03130552274
4√n 67.720281482423
5√n 29.145734450362

Divisors of 21031731

1, 7, 21, 147, 189, 757, 1323, 3969, 5299, 15897, 27783, 111279, 143073, 1001511, 3004533, 21031731

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 -21031730
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 21031731 can be divided by 16 positive divisors. The sum of these divisors (counting 21031731) is 1, the average is 0.0625.

Base conversion 21031731

Base System Value
2 Binary 1010000001110101100110011
3 Ternary 1110120112010000
4 Quaternary 1100032230303
5 Quinary 20341003411
6 Senary 2030441043
8 Octal 120165463
10 Decimal 21031731
12 Duodecimal 7063183
16 Hexadecimal 140eb33
20 Vigesimal 6b8j6b
36 Base36 cis6r

Cryptographic Hash Functions

md5 b2f087056963a3ccbb1da1ea8d0762f2
sha1 616a079eb6783f5c14db1b2bcdb96af875e5d1d1
sha256 78b95bd0fe369fa3bca0d4a3afe680256d55998b81d7c6db2390a0d7cf0c3f33
sha512 4f4e4fee90353d8485758d7332330f352f9e892bf75e7f2f916bad11724a6febd282b1977dcecbc214697e9c6f9b4f5a9ce9dceb2fc41eeea330ac5de0b7155b
ripemd-160 e26e5087349c729031554ef7318235ec83e94372

21031731 as geometric shapes

Circle

Radius = n
Diameter 42063462
Circumference 132146263.20375
Area 1.3896323301783E+15

Sphere

Radius = n
Volume 3.8968497809617E+22
Surface area 5.5585293207131E+15
Circumference 132146263.20375

Square

Length = n
Perimeter 84126924
Area 442333708856361
Diagonal 29743359.220383

Cube

Length = n
Surface area 2654002253138166
Volume 9.3030435768993E+21
Space diagonal 36428026.663121

Equilateral Triangle

Length = n
Perimeter 63095193
Area 1.915361144099E+14
Altitude 18214013.331561

Triangular Pyramid

Length = n
Surface area 1.915361144099E+14
Volume 1.0963741998166E+21
Height 9914453.0734609