131291281 (number)

131291281 is an odd 9-digits composite number following 131291280 and preceding 131291282. In scientific notation, it is written as 1.31291281 × 10^8. The sum of its digits is 28. It has a total of 2 prime factors and 4 positive divisors. There are 116129520 positive integers (up to 131291281) that are relatively prime to 131291281.

Interesting facts

Basic properties

Name

Name one hundred thirty-one million two hundred ninety-one thousand two hundred eighty-one

Notation

Scientific notation 1.31291281 × 10^8
Engineering notation 1.31291281 × 10^6

Prime Factorization of 131291281

Prime Factorization 407 × 322583

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 131291281
Product of the distinct prime numbers

The prime factorization of 131291281 is 407 × 322583. Since it has a total of 2 prime factors.

Most popular turbo-numbers

8, 6, 39, 52, 296, 3, 2860, 1589, 7034, 43038, 598657, 523704, 5916595, 6658376, 65480512, 48038880, 399748571, 689131092, 3301119594, 2059818908

Basic calculations (n = 131291281)

Multiplication

n×y
n×2 262582562
n×3 393873843
n×4 525165124
n×5 656456405

Division

n÷y
n÷2 65645640.5
n÷3 43763760.333333
n÷3 32822820.25
n÷5 26258256.2

Exponentiation

ny
n2 17237400466620961
n3 2.2631203883727E+24
n4 2.9712797484666E+32
n5 3.9010312438554E+40

Nth Root

y√n
2√n 11458.240746293
3√n 508.2514526422
4√n 107.04317234786
5√n 42.038496691995

Divisors of 131291281

1, 407, 322583, 131291281

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 -131291280
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 131291281 can be divided by 4 positive divisors. The sum of these divisors (counting 131291281) is 1, the average is 0.25.

Base conversion 131291281

Base System Value
2 Binary 111110100110101100010010001
3 Ternary 100011001021210001
4 Quaternary 13310311202101
5 Quinary 232102310111
6 Senary 21010010001
8 Octal 764654221
10 Decimal 131291281
12 Duodecimal 37b76901
16 Hexadecimal 7d35891
20 Vigesimal 210b841
36 Base36 266101

Cryptographic Hash Functions

md5 78a71d3817cf0107163cf39bcb4bd871
sha1 d47435286ebb6ee4cbfd8fb7b7ef0d72ea979e19
sha256 5123e2b0b30b803c78c465e1ace837360f561a906cc9d4cbe367a5633c4baa56
sha512 31f68267a81914389f91781ec712774ebf809de137ae763730b4540ed82934938c2c990eac7220753a71e06189a34e9115bb3bbe01b2b42a22176e7bfb8a3107
ripemd-160 dd4433756beb898a90db4ab2ac17e7042b2d3f4c

131291281 as geometric shapes

Circle

Radius = n
Diameter 262582562
Circumference 824927447.73999
Area 5.4152890672922E+16

Sphere

Radius = n
Volume 9.4797365150678E+24
Surface area 2.1661156269169E+17
Circumference 824927447.73999

Square

Length = n
Perimeter 525165124
Area 17237400466620961
Diagonal 185673910.21154

Cube

Length = n
Surface area 103424402799725766
Volume 2.2631203883727E+24
Space diagonal 227403169.2828

Equilateral Triangle

Length = n
Perimeter 393873843
Area 7.4640133496497E+15
Altitude 113701584.6414

Triangular Pyramid

Length = n
Surface area 7.4640133496497E+15
Volume 2.6671129554331E+23
Height 61891303.403846