21131631 is an odd 8-digits composite number following 21131630
and preceding 21131632 . In scientific notation, it is written as 2.1131631 × 10^7.
The sum of its digits is 18. It has a total of 3 prime factors and 8 positive divisors.
There are 13908024 positive integers (up to 21131631) that are relatively prime to 21131631.
21131631 has 8 divisors, whose sum is 22193920
The reverse of 21131631 is 13613112
Previous prime number is 79
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 18
Digital Root 9
Name
twenty-one million one hundred thirty-one thousand six hundred thirty-one
Scientific notation
2.1131631 × 10^7
Engineering notation
2.1131631 × 10^6
Prime Factorization
27 × 79 × 9907
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21131631
Product of the distinct prime numbers
The prime factorization of 21131631 is 27 × 79 × 9907.
Since it has a total of 3 prime factors.
4 , 10 , 54 , 75 , 979 , 186 , 570 , 2844 , 84563 , 77377 , 161016 , 510067 , 6244121 , 6905883 , 13561110 , 2119305 , 695668630 , 977358256 , 2454813813 , 8764707007
n×2
42263262
n×3
63394893
n×4
84526524
n×5
105658155
n÷2
10565815.5
n÷3
7043877
n÷3
5282907.75
n÷5
4226326.2
n2
446545828720161
n3
9.4362416771036E+21
n4
1.9940317714738E+29
n5
4.213714359706E+36
2 √n
4596.9153788165
3 √n
276.46766176524
4 √n
67.800555888699
5 √n
29.173370240054
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21131630
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21131631 can be divided by 8 positive divisors.
The sum of these divisors (counting 21131631) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000100111000101101111
3
Ternary
1110202121011000
4
Quaternary
1100213011233
5
Quinary
20402203011
6
Senary
2032531343
8
Octal
120470557
10
Decimal
21131631
12
Duodecimal
70b0b53
16
Hexadecimal
142716f
20
Vigesimal
6c191b
36
Base36
ckx9r
md5
c613a459c101893156f2b5787cee0268
sha1
660f3838f93cc0aa60f70c4be4b3931663b7e380
sha256
706b7b8ae79c2c68a6a53e1e525c98d097efb894a8a861f3402fd3d9bf5da96b
sha512
aaebcd98ef3f1f6fe64a45b4472db1deb9b327286027b68ecad9b6924ca54aa56e42a43d1c26699c91edbad19de9cc0d27b3a7bc4f626e6a4c74b214fcbc3edc
ripemd-160
8f7ad4e62b71ffabeb65938e2d165ac858bd8264
Diameter
42263262
Circumference
132773953.41594
Area
1.4028650949984E+15
Volume
3.9526436707049E+22
Surface area
5.6114603799937E+15
Circumference
132773953.41594
Perimeter
84526524
Area
446545828720161
Diagonal
29884639.155264
Surface area
2679274972320966
Volume
9.4362416771036E+21
Space diagonal
36601058.538798
Perimeter
63394893
Area
1.9336001581282E+14
Altitude
18300529.269399
Surface area
1.9336001581282E+14
Volume
1.1120717464659E+21
Height
9961546.3850879