Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

81431 (number)

81431 is an odd 5-digits composite number following 81430 and preceding 81432. In scientific notation, it is written as 8.1431 × 10^4. The sum of its digits is 17. It has a total of 2 prime factors and 4 positive divisors. There are 69792 positive integers (up to 81431) that are relatively prime to 81431.

Interesting facts

81431 has 4 divisors, whose sum is 93072
The reverse of 81431 is 13418
Previous prime number is 7

Basic properties

Is Prime? no
Number parity odd
Number length 5
Sum of Digits 17
Digital Root 8

Name

Name	eighty-one thousand four hundred thirty-one

Notation

Scientific notation	8.1431 × 10^4
Engineering notation	8.1431 × 10^3

Prime Factorization of 81431

Prime Factorization 7 × 11633

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81431	Product of the distinct prime numbers

The prime factorization of 81431 is 7 × 11633. Since it has a total of 2 prime factors.

Most popular turbo-numbers

10, 2, 14, 85, 784, 125, 9230, 7403, 22605, 3002, 193694, 164229, 9228758, 8238798, 83892888, 27386914, 778187686, 441759489, 3816599181, 4125648500

Basic calculations (n = 81431)

Multiplication

n×y

n×2	162862
n×3	244293
n×4	325724
n×5	407155

Division

n÷y

n÷2	40715.5
n÷3	27143.666666667
n÷3	20357.75
n÷5	16286.2

Exponentiation

n^y

n²	6631007761
n³	539969592985991
n⁴	4.3970263926442E+19
n⁵	3.5805425617941E+24

Nth Root

^y√n

²√n	285.36117465416
³√n	43.344093317477
⁴√n	16.892636699289
⁵√n	9.5974963057464

Divisors of 81431

1, 7, 11633, 81431

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	-81430	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 81431 can be divided by 4 positive divisors. The sum of these divisors (counting 81431) is 1, the average is 0.25.

Base conversion 81431

Base	System	Value
2	Binary	10011111000010111
3	Ternary	11010200222
4	Quaternary	103320113
5	Quinary	10101211
6	Senary	1424555
8	Octal	237027
10	Decimal	81431
12	Duodecimal	3b15b
16	Hexadecimal	13e17
20	Vigesimal	a3bb
36	Base36	1qtz

Cryptographic Hash Functions

md5	b781fa2c2a911b4f7bc266890e468c07
sha1	d4fbe3bdc04a7b1dcc64adaa81b90581df38281c
sha256	c938c5c86d147bcd790fac673b218ffb8bc6240bff8d0f34ac8167ff1902737e
sha512	b2f4eaeb170dcfa384c1292097df28dd55ba511caf978de535ed8caf5b5a8175a3222181416572e17d98e2bf26d24a07748a8af92ac6a7994cceef3c62b3295e
ripemd-160	b2f0d0cab2ce1a42a7da556623998c71efa930ab

81431 as geometric shapes

Circle

Radius = n

Diameter	162862
Circumference	511646.06274894
Area	20831925267.855

Sphere

Radius = n

Volume	2.2618193419822E+15
Surface area	83327701071.418
Circumference	511646.06274894

Square

Length = n

Perimeter	325724
Area	6631007761
Diagonal	115160.8245976

Cube

Length = n

Surface area	39786046566
Volume	539969592985991
Space diagonal	141042.62931114

Equilateral Triangle

Length = n

Perimeter	244293
Area	2871310586.8589
Altitude	70521.314655571

Triangular Pyramid

Length = n

Surface area	2871310586.8589
Volume	63636026805822
Height	38386.941532535