20731931 is an odd 8-digits composite number following 20731930
and preceding 20731932 . In scientific notation, it is written as 2.0731931 × 10^7.
The sum of its digits is 26. It has a total of 2 prime factors and 4 positive divisors.
There are 18847200 positive integers (up to 20731931) that are relatively prime to 20731931.
20731931 has 4 divisors, whose sum is 22616664
The reverse of 20731931 is 13913702
Previous prime number is 11
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 26
Digital Root 8
Name
twenty million seven hundred thirty-one thousand nine hundred thirty-one
Scientific notation
2.0731931 × 10^7
Engineering notation
2.0731931 × 10^6
Prime Factorization
11 × 1884721
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20731931
Product of the distinct prime numbers
The prime factorization of 20731931 is 11 × 1884721.
Since it has a total of 2 prime factors.
2 , 1 , 27 , 91 , 891 , 465 , 4054 , 7665 , 56347 , 52118 , 854029 , 751863 , 6042871 , 7778446 , 70096804 , 6566461 , 789815683 , 454246469 , 6850340541 , 1851552396
n×2
41463862
n×3
62195793
n×4
82927724
n×5
103659655
n÷2
10365965.5
n÷3
6910643.6666667
n÷3
5182982.75
n÷5
4146386.2
n2
429812962988761
n3
8.9108526915885E+21
n4
1.8473918315318E+29
n5
3.829999998128E+36
2 √n
4553.2330272017
3 √n
274.71344696684
4 √n
67.477648352633
5 √n
29.062164117096
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
-20731930
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 20731931 can be divided by 4 positive divisors.
The sum of these divisors (counting 20731931) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001111000101100000011011
3
Ternary
1110000021212022
4
Quaternary
1033011200123
5
Quinary
20301410211
6
Senary
2020205055
8
Octal
117054033
10
Decimal
20731931
12
Duodecimal
6b3978b
16
Hexadecimal
13c581b
20
Vigesimal
69b9gb
36
Base36
cccuz
md5
77c88768780fc6b36dff11d008bb9fcb
sha1
f999df648d2121cb921e8ec67183a54c8ee67d68
sha256
6bb55b2a95aba6b521f0ce5de949a7ddb26feaabdb9305d5a5ee4f4dd86bf82e
sha512
57c67fbb5b4cd0d441b46900d873d824605f47f22d4edd0c436e6adae5ab407cc4543b30bd694356d1de6e60957547d1a816514255936a8b9385ed326af4052d
ripemd-160
b191a2d506f48dff44becb2a43e11124cc3b8fdf
Diameter
41463862
Circumference
130262564.24866
Area
1.3502972469432E+15
Volume
3.7325692470821E+22
Surface area
5.4011889877726E+15
Circumference
130262564.24866
Perimeter
82927724
Area
429812962988761
Diagonal
29319377.994383
Surface area
2578877777932566
Volume
8.9108526915885E+21
Space diagonal
35908757.831012
Perimeter
62195793
Area
1.8611447241206E+14
Altitude
17954378.915506
Surface area
1.8611447241206E+14
Volume
1.0501540607294E+21
Height
9773125.9981277