21081313 is an odd 8-digits composite number following 21081312
and preceding 21081314 . In scientific notation, it is written as 2.1081313 × 10^7.
The sum of its digits is 19. It has a total of 3 prime factors and 8 positive divisors.
There are 19135200 positive integers (up to 21081313) that are relatively prime to 21081313.
21081313 has 8 divisors, whose sum is 23033376
The reverse of 21081313 is 31318012
Previous prime number is 2011
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 19
Digital Root 1
Name
twenty-one million eighty-one thousand three hundred thirteen
Scientific notation
2.1081313 × 10^7
Engineering notation
2.1081313 × 10^6
Prime Factorization
11 × 2011 × 953
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21081313
Product of the distinct prime numbers
The prime factorization of 21081313 is 11 × 2011 × 953.
Since it has a total of 3 prime factors.
2 , 2 , 100 , 64 , 18 , 371 , 7676 , 830 , 98636 , 23684 , 21393 , 796095 , 882984 , 6743744 , 13638515 , 33994530 , 253885989 , 966524632 , 8580778450 , 1785575207
n×2
42162626
n×3
63243939
n×4
84325252
n×5
105406565
n÷2
10540656.5
n÷3
7027104.3333333
n÷3
5270328.25
n÷5
4216262.6
n2
444421757803969
n3
9.3689941802757E+21
n4
1.9751069880957E+29
n5
4.1637848624533E+36
2 √n
4591.439099019
3 √n
276.24804855197
4 √n
67.760158640745
5 √n
29.159463638943
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
-21081312
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 21081313 can be divided by 8 positive divisors.
The sum of these divisors (counting 21081313) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000011010110011100001
3
Ternary
1110200001010101
4
Quaternary
1100122303201
5
Quinary
20344100223
6
Senary
2031502401
8
Octal
120326341
10
Decimal
21081313
12
Duodecimal
7087a01
16
Hexadecimal
141ace1
20
Vigesimal
6bf35d
36
Base36
cjug1
md5
d48e4cf092c87842be067b86b00852f2
sha1
1a4c0c0d7afe0b57f98c8a137073350d1eb40cad
sha256
754b9bd5e391b53baf44f78052c4aa9d86e57021a940fede079c3d7544c8bd64
sha512
afb0e732e1a5d020ecbaa0c07770e20b8c227361a0c49bef10409466545a89db44fe2fff4c50c3fe4c6931162df317851ccf475800636b811f802b096ad0c1c7
ripemd-160
79707bb2f8316def8679365ec6de811c9044d54f
Diameter
42162626
Circumference
132457796.09765
Area
1.3961921294124E+15
Volume
3.9244751051039E+22
Surface area
5.5847685176496E+15
Circumference
132457796.09765
Perimeter
84325252
Area
444421757803969
Diagonal
29813478.757232
Surface area
2666530546823814
Volume
9.3689941802757E+21
Space diagonal
36513905.206262
Perimeter
63243939
Area
1.9244026612639E+14
Altitude
18256952.603131
Surface area
1.9244026612639E+14
Volume
1.1041465529617E+21
Height
9937826.2524107