31820961 is an odd 8-digits composite number following 31820960
and preceding 31820962 . In scientific notation, it is written as 3.1820961 × 10^7.
The sum of its digits is 30. It has a total of 2 prime factors and 4 positive divisors.
There are 20696480 positive integers (up to 31820961) that are relatively prime to 31820961.
31820961 has 4 divisors, whose sum is 32079792
The reverse of 31820961 is 16902813
Previous prime number is 123
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 30
Digital Root 3
Name
thirty-one million eight hundred twenty thousand nine hundred sixty-one
Scientific notation
3.1820961 × 10^7
Engineering notation
3.1820961 × 10^6
Prime Factorization
123 × 258707
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
31820961
Product of the distinct prime numbers
The prime factorization of 31820961 is 123 × 258707.
Since it has a total of 2 prime factors.
1 , 10 , 69 , 78 , 16 , 935 , 320 , 883 , 66641 , 97864 , 458966 , 80749 , 1486472 , 341676 , 24283845 , 50766700 , 736051600 , 588335437 , 3244918438 , 8777876945
n×2
63641922
n×3
95462883
n×4
127283844
n×5
159104805
n÷2
15910480.5
n÷3
10606987
n÷3
7955240.25
n÷5
6364192.2
n2
1012573558963521
n3
3.2221063729409E+22
n4
1.0253052123121E+30
n5
3.2626197174078E+37
2 √n
5641.0070909369
3 √n
316.88700540784
4 √n
75.10663812831
5 √n
31.662314489388
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
-31820960
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 31820961 can be divided by 4 positive divisors.
The sum of these divisors (counting 31820961) is 1, the average is 0.25.
Base
System
Value
2
Binary
1111001011000110010100001
3
Ternary
2012212200011010
4
Quaternary
1321120302201
5
Quinary
31121232321
6
Senary
3054011133
8
Octal
171306241
10
Decimal
31820961
12
Duodecimal
a7a6aa9
16
Hexadecimal
1e58ca1
20
Vigesimal
9ihc81
36
Base36
iy17l
md5
9d3f67c5384a3a1b38dc82408c4d14f6
sha1
088ef993974cfd38e553b7ddbe8ec1d946bc3cfd
sha256
0e01ba41ab7db7032219dc0a37c89ae65f4dd95b95ad96d081e2de49eac7bd18
sha512
85cab8ca62b5909c6ba4a1ec831e3cbac996db258a593f29d462fa7453c0e1a07338352d182484dd1c0c6124ada4775cbf953f3f0a7e4a165a23be8f611d38ad
ripemd-160
846ddac01508908a7badf4f86e173d27f06ad7ca
Diameter
63641922
Circumference
199936994.61553
Area
3.1810936540591E+15
Volume
1.3496727613755E+23
Surface area
1.2724374616236E+16
Circumference
199936994.61553
Perimeter
127283844
Area
1012573558963521
Diagonal
45001634.613945
Surface area
6075441353781126
Volume
3.2221063729409E+22
Space diagonal
55115521.197668
Perimeter
95462883
Area
4.3845721263141E+14
Altitude
27557760.598834
Surface area
4.3845721263141E+14
Volume
3.7972887766849E+21
Height
15000544.871315