21031807 is an odd 8-digits prime number following 21031806
and preceding 21031808 . In scientific notation, it is written as 2.1031807 × 10^7.
The sum of its digits is 22. It has a total of 1 prime factors and 2 positive divisors.
There are 21031806 positive integers (up to 21031807) that are relatively prime to 21031807.
21031807 has 2 divisors, whose sum is 21031808
The reverse of 21031807 is 70813012
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 22
Digital Root 4
Name
twenty-one million thirty-one thousand eight hundred seven
Scientific notation
2.1031807 × 10^7
Engineering notation
2.1031807 × 10^6
Prime Factorization
21031807
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
21031807
Product of the distinct prime numbers
The prime factorization of 21031807 is 21031807.
Since it has a total of 1 prime factors.
10 , 1 , 91 , 1 , 385 , 845 , 4558 , 1711 , 18028 , 38485 , 825894 , 230931 , 3500486 , 9026186 , 40798150 , 87811042 , 140103577 , 329940959 , 541416254 , 1861819731
n×2
42063614
n×3
63095421
n×4
84127228
n×5
105159035
n÷2
10515903.5
n÷3
7010602.3333333
n÷3
5257951.75
n÷5
4206361.4
n2
442336905685249
n3
9.3031444293494E+21
n4
1.956619381312E+29
n5
4.1151241200214E+36
2 √n
4586.0448100733
3 √n
276.03163801009
4 √n
67.720342660631
5 √n
29.145755514463
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
21031808
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
10515904
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
4586.0449190997
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999049059
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21031807 can be divided by 2 positive divisors.
The sum of these divisors (counting 21031807) is 21031808, the average is 10515904.
Base
System
Value
2
Binary
1010000001110101101111111
3
Ternary
1110120112012211
4
Quaternary
1100032231333
5
Quinary
20341004212
6
Senary
2030441251
8
Octal
120165577
10
Decimal
21031807
12
Duodecimal
7063227
16
Hexadecimal
140eb7f
20
Vigesimal
6b8ja7
36
Base36
cis8v
md5
9a684fee1597be2cd1cdba068b09866a
sha1
94dcbd9a10d4bccb3c2a4d5fb2504d146e084071
sha256
6e3479819e87cc802eaeb2b8fba4a27139121acb22ec1deb500a57b65a7d72bd
sha512
ba3375b903e4e60686b765744805e588a3283b6c52da6cd0960cffe72f5fa20b2059098028aa4b70f676994351254712f65db6fe00e75cfb72b69726e0b1f36b
ripemd-160
0fcda4a43d2e9fef18344980270cd6d47e011be9
Diameter
42063614
Circumference
132146740.72584
Area
1.3896423733124E+15
Volume
3.8968920259372E+22
Surface area
5.5585694932497E+15
Circumference
132146740.72584
Perimeter
84127228
Area
442336905685249
Diagonal
29743466.700613
Surface area
2654021434111494
Volume
9.3031444293494E+21
Space diagonal
36428158.298983
Perimeter
63095421
Area
1.9153749867741E+14
Altitude
18214079.149491
Surface area
1.9153749867741E+14
Volume
1.0963860853918E+21
Height
9914488.9002045