81311312 (number)

81311312 is an even 8-digits composite number following 81311311 and preceding 81311313. In scientific notation, it is written as 8.1311312 × 10^7. The sum of its digits is 20. It has a total of 6 prime factors and 20 positive divisors. There are 40616448 positive integers (up to 81311312) that are relatively prime to 81311312.

Interesting facts

Basic properties

Name

Name eighty-one million three hundred eleven thousand three hundred twelve

Notation

Scientific notation 8.1311312 × 10^7
Engineering notation 8.1311312 × 10^6

Prime Factorization of 81311312

Prime Factorization 2 × 2 × 2 × 2 × 3413 × 1489

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 10163914
Product of the distinct prime numbers

The prime factorization of 81311312 is 2 × 2 × 2 × 2 × 3413 × 1489. Since it has a total of 6 prime factors.

Most popular turbo-numbers

1, 2, 15, 60, 945, 887, 3210, 9946, 17280, 15497, 656187, 411982, 207590, 8115344, 70829102, 10015780, 558119244, 631900949, 5413191111, 4444641018

Basic calculations (n = 81311312)

Multiplication

n×y
n×2 162622624
n×3 243933936
n×4 325245248
n×5 406556560

Division

n÷y
n÷2 40655656
n÷3 27103770.666667
n÷3 20327828
n÷5 16262262.4

Exponentiation

ny
n2 6611529459161344
n3 5.3759213465106E+23
n4 4.3712321789358E+31
n5 3.5543062352589E+39

Nth Root

y√n
2√n 9017.2785251427
3√n 433.22847061571
4√n 94.959351962525
5√n 38.197082592276

Divisors of 81311312

1, 2, 4, 8, 16, 1489, 2978, 3413, 5956, 6826, 11912, 13652, 23824, 27304, 54608, 5081957, 10163914, 20327828, 40655656, 81311312

20 divisors

τ Total Divisors 20
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81311311
Sum of the proper positive divisors of n
A Arithmetic Mean 0.05
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 20
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81311312 can be divided by 20 positive divisors. The sum of these divisors (counting 81311312) is 1, the average is 0.05.

Base conversion 81311312

Base System Value
2 Binary 100110110001011011001010000
3 Ternary 12200000001011002
4 Quaternary 10312023121100
5 Quinary 131303430222
6 Senary 12022441132
8 Octal 466133120
10 Decimal 81311312
12 Duodecimal 232931a8
16 Hexadecimal 4d8b650
20 Vigesimal 1583i5c
36 Base36 1ces7k

Cryptographic Hash Functions

md5 504be343283436b35ea1845af8ca3a07
sha1 47af070d5e6bb64f8efaa2c39c3a2668604d8912
sha256 1de697084653842b0e5d6dabd305e3ac59be701520355c3e351b9629826f11cc
sha512 43aa226696c709c78ab00dd22be596569f849a693b5f3ba27cdea18251780f40a96e308fe5607d8f77222c3289c934cd526813ae90c398d3d9d4d473283a5d34
ripemd-160 8c95dbb6216912abf7b4a8909d42b2440c7d24c4

81311312 as geometric shapes

Circle

Radius = n
Diameter 162622624
Circumference 510894040.8659
Area 2.0770732377894E+16

Sphere

Radius = n
Volume 2.2518606677966E+24
Surface area 8.3082929511575E+16
Circumference 510894040.8659

Square

Length = n
Perimeter 325245248
Area 6611529459161344
Diagonal 114991560.20475

Cube

Length = n
Surface area 39669176754968064
Volume 5.3759213465106E+23
Space diagonal 140835323.61408

Equilateral Triangle

Length = n
Perimeter 243933936
Area 2.8628762347515E+15
Altitude 70417661.807042

Triangular Pyramid

Length = n
Surface area 2.8628762347515E+15
Volume 6.3355840654053E+22
Height 38330520.06825