21131217 is an odd 8-digits composite number following 21131216
and preceding 21131218 . In scientific notation, it is written as 2.1131217 × 10^7.
The sum of its digits is 18. It has a total of 4 prime factors and 12 positive divisors.
There are 13979160 positive integers (up to 21131217) that are relatively prime to 21131217.
21131217 has 12 divisors, whose sum is 30757584
The reverse of 21131217 is 71213112
Previous prime number is 131
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 two hundred seventeen
Scientific notation
2.1131217 × 10^7
Engineering notation
2.1131217 × 10^6
Prime Factorization
3 × 3 × 131 × 17923
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
7043739
Product of the distinct prime numbers
The prime factorization of 21131217 is 3 × 3 × 131 × 17923.
Since it has a total of 4 prime factors.
4 , 8 , 33 , 23 , 841 , 410 , 9174 , 5977 , 84987 , 71446 , 340849 , 25825 , 5281392 , 3091424 , 96362165 , 59983383 , 886019728 , 472394690 , 3844553682 , 6976232799
n×2
42262434
n×3
63393651
n×4
84524868
n×5
105656085
n÷2
10565608.5
n÷3
7043739
n÷3
5282804.25
n÷5
4226243.4
n2
446528331901089
n3
9.4356870780499E+21
n4
1.9938755119037E+29
n5
4.2133016113023E+36
2 √n
4596.8703484001
3 √n
276.4658562829
4 √n
67.800223807891
5 √n
29.173255929238
1 , 3 , 9 , 131 , 393 , 1179 , 17923 , 53769 , 161307 , 2347913 , 7043739 , 21131217
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21131216
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
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
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21131217 can be divided by 12 positive divisors.
The sum of these divisors (counting 21131217) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1010000100110111111010001
3
Ternary
1110202120120200
4
Quaternary
1100212333101
5
Quinary
20402144332
6
Senary
2032525413
8
Octal
120467721
10
Decimal
21131217
12
Duodecimal
70b0869
16
Hexadecimal
1426fd1
20
Vigesimal
6c180h
36
Base36
ckwy9
md5
a40186b96e7d0ab3d3b370cb03b6426e
sha1
876f90513c5cb653d7a2f5da20179be31e1b8c74
sha256
4a996d683dfa779fb1ce161f97b8ac07cad93196d41af298c8ac11354c0351aa
sha512
da116c190c462ad2dcb504c918089c805f5c0a911fc44c01a906ca4f1cee1567eb09cf2ff1a376169ed4e3bda140796f80c90e88a2d2f0d15a7002bfddc1b814
ripemd-160
f5e033775daff57db7cb42cd530cdd2bad2745c0
Diameter
42262434
Circumference
132771352.17722
Area
1.4028101271202E+15
Volume
3.9524113607965E+22
Surface area
5.6112405084807E+15
Circumference
132771352.17722
Perimeter
84524868
Area
446528331901089
Diagonal
29884053.670849
Surface area
2679169991406534
Volume
9.4356870780499E+21
Space diagonal
36600341.469763
Perimeter
63393651
Area
1.9335243946792E+14
Altitude
18300170.734882
Surface area
1.9335243946792E+14
Volume
1.1120063863406E+21
Height
9961351.2236163