21031817 is an odd 8-digits prime number following 21031816
and preceding 21031818 . In scientific notation, it is written as 2.1031817 × 10^7.
The sum of its digits is 23. It has a total of 1 prime factors and 2 positive divisors.
There are 21031816 positive integers (up to 21031817) that are relatively prime to 21031817.
21031817 has 2 divisors, whose sum is 21031818
The reverse of 21031817 is 71813012
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 23
Digital Root 5
Name
twenty-one million thirty-one thousand eight hundred seventeen
Scientific notation
2.1031817 × 10^7
Engineering notation
2.1031817 × 10^6
Prime Factorization
21031817
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
21031817
Product of the distinct prime numbers
The prime factorization of 21031817 is 21031817.
Since it has a total of 1 prime factors.
1 , 5 , 31 , 5 , 92 , 21 , 4260 , 3594 , 14683 , 68647 , 572541 , 633262 , 5181121 , 5400258 , 55404082 , 34924293 , 807408584 , 131998053 , 2927231403 , 4936043513
n×2
42063634
n×3
63095451
n×4
84127268
n×5
105159085
n÷2
10515908.5
n÷3
7010605.6666667
n÷3
5257954.25
n÷5
4206363.4
n2
442337326321489
n3
9.3031576994628E+21
n4
1.9566231025724E+29
n5
4.1151339031276E+36
2 √n
4586.0459003372
3 √n
276.03168175837
4 √n
67.720350710383
5 √n
29.145758286051
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
21031818
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
10515909
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
4586.0460093636
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.999999904906
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21031817 can be divided by 2 positive divisors.
The sum of these divisors (counting 21031817) is 21031818, the average is 10515909.
Base
System
Value
2
Binary
1010000001110101110001001
3
Ternary
1110120112020012
4
Quaternary
1100032232021
5
Quinary
20341004232
6
Senary
2030441305
8
Octal
120165611
10
Decimal
21031817
12
Duodecimal
7063235
16
Hexadecimal
140eb89
20
Vigesimal
6b8jah
36
Base36
cis95
md5
2b8ca937a84063373df6a25d3c860d98
sha1
d30f2470e6d4c1ffa4206d5ece29b2de056d7a3e
sha256
34baee5b1ed16f59bca85ef12575ac3f3f30f8e6c95023a32e085c1917d32575
sha512
1cb42dbc7415269ddeb4f073397f6f8ed06e77d3fe18cc0f0d40213d1ca121bfbc8c972ee06af598fa1041a1909fa1611366f17e87d8fea08717a7fac2d3f243
ripemd-160
0be1f949aadb2126bcad8390e9ac90edaf6daedb
Diameter
42063634
Circumference
132146803.55769
Area
1.3896436947801E+15
Volume
3.8968975845093E+22
Surface area
5.5585747791206E+15
Circumference
132146803.55769
Perimeter
84127268
Area
442337326321489
Diagonal
29743480.842749
Surface area
2654023957928934
Volume
9.3031576994628E+21
Space diagonal
36428175.619491
Perimeter
63095451
Area
1.9153768081825E+14
Altitude
18214087.809745
Surface area
1.9153768081825E+14
Volume
1.0963876492897E+21
Height
9914493.6142497