71311991 is an odd 8-digits composite number following 71311990
and preceding 71311992 . In scientific notation, it is written as 7.1311991 × 10^7.
The sum of its digits is 32. It has a total of 2 prime factors and 4 positive divisors.
There are 67117152 positive integers (up to 71311991) that are relatively prime to 71311991.
71311991 has 4 divisors, whose sum is 75506832
The reverse of 71311991 is 19911317
Previous prime number is 17
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 32
Digital Root 5
Name
seventy-one million three hundred eleven thousand nine hundred ninety-one
Scientific notation
7.1311991 × 10^7
Engineering notation
7.1311991 × 10^6
Prime Factorization
17 × 4194823
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
71311991
Product of the distinct prime numbers
The prime factorization of 71311991 is 17 × 4194823.
Since it has a total of 2 prime factors.
10 , 4 , 5 , 36 , 29 , 341 , 1542 , 8515 , 12999 , 55757 , 694012 , 44097 , 7040226 , 3562542 , 61626742 , 66527362 , 134723515 , 604928301 , 5369163571 , 6159381493
n×2
142623982
n×3
213935973
n×4
285247964
n×5
356559955
n÷2
35655995.5
n÷3
23770663.666667
n÷3
17827997.75
n÷5
14262398.2
n2
5085400060384081
n3
3.6265000333751E+23
n4
2.5861293774154E+31
n5
1.8442203488709E+39
2 √n
8444.6427396308
3 √n
414.68741352148
4 √n
91.894737279296
5 √n
37.207673228526
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
-71311990
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 71311991 can be divided by 4 positive divisors.
The sum of these divisors (counting 71311991) is 1, the average is 0.25.
Base
System
Value
2
Binary
100010000000010001001110111
3
Ternary
11222012000122212
4
Quaternary
10100002021313
5
Quinary
121223440431
6
Senary
11024244035
8
Octal
420021167
10
Decimal
71311991
12
Duodecimal
1ba7061b
16
Hexadecimal
4402277
20
Vigesimal
125djjb
36
Base36
16ggon
md5
2cc07ab53776305d1ab14f0e9a1b9625
sha1
d99eead868d60e200574760a2025b1f0f63543ed
sha256
1c7d9b4b737eee3f5559bfa483d241294d05efa02b73195a7af90b02460145dc
sha512
ee211de87147a98a5d8582836350c7429202b7ab000c43a0222f2de4584fe32a5b449e01dfdf3862faa7de1307feade75a00a4079a13dec0196b25a39e7e848a
ripemd-160
6581d033c711d13af5db6c9855961b6e81edc943
Diameter
142623982
Circumference
448066454.07692
Area
1.5976255470268E+16
Volume
1.5190647817459E+24
Surface area
6.3905021881071E+16
Circumference
448066454.07692
Perimeter
285247964
Area
5085400060384081
Diagonal
100850384.83203
Surface area
30512400362304486
Volume
3.6265000333751E+23
Space diagonal
123515991.60089
Perimeter
213935973
Area
2.2020428203498E+15
Altitude
61757995.800447
Surface area
2.2020428203498E+15
Volume
4.2738712759546E+22
Height
33616794.944009