21131213 is an odd 8-digits composite number following 21131212
and preceding 21131214 . In scientific notation, it is written as 2.1131213 × 10^7.
The sum of its digits is 14. It has a total of 2 prime factors and 4 positive divisors.
There are 21024828 positive integers (up to 21131213) that are relatively prime to 21131213.
21131213 has 4 divisors, whose sum is 21237600
The reverse of 21131213 is 31213112
Previous prime number is 199
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 14
Digital Root 5
Name
twenty-one million one hundred thirty-one thousand two hundred thirteen
Scientific notation
2.1131213 × 10^7
Engineering notation
2.1131213 × 10^6
Prime Factorization
199 × 106187
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21131213
Product of the distinct prime numbers
The prime factorization of 21131213 is 199 × 106187.
Since it has a total of 2 prime factors.
10 , 2 , 95 , 59 , 112 , 720 , 3651 , 8654 , 58958 , 54149 , 348434 , 72412 , 7516137 , 1990455 , 36744326 , 24366147 , 26086507 , 665541641 , 707805148 , 68964055
n×2
42262426
n×3
63393639
n×4
84524852
n×5
105656065
n÷2
10565606.5
n÷3
7043737.6666667
n÷3
5282803.25
n÷5
4226242.6
n2
446528162851369
n3
9.435681719711E+21
n4
1.9938740021942E+29
n5
4.2132976235528E+36
2 √n
4596.8699133215
3 √n
276.46583883852
4 √n
67.800220599357
5 √n
29.173254824777
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
-21131212
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 21131213 can be divided by 4 positive divisors.
The sum of these divisors (counting 21131213) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000100110111111001101
3
Ternary
1110202120120112
4
Quaternary
1100212333031
5
Quinary
20402144323
6
Senary
2032525405
8
Octal
120467715
10
Decimal
21131213
12
Duodecimal
70b0865
16
Hexadecimal
1426fcd
20
Vigesimal
6c180d
36
Base36
ckwy5
md5
e2f782d035d55f87bae4ae4052451727
sha1
7f8605ff508a79f540692f4c59876d639eb9927f
sha256
ba585d516b8bd30d904ad3382e3f966fb72e9b5f8e0ff08db712057bf89527e3
sha512
97d341f0bbdaa8cc0d83da1a88b1e72704e7ce11fca29db4042865f9c649680a6c3b1da282c2b700fcf0be7bf88a2b2b862e3431dc9f39ed2aa496fad207d6bd
ripemd-160
a51e8971a1afaaef53a85840779597909c1b80b3
Diameter
42262426
Circumference
132771327.04448
Area
1.4028095960348E+15
Volume
3.9524091163007E+22
Surface area
5.6112383841392E+15
Circumference
132771327.04448
Perimeter
84524852
Area
446528162851369
Diagonal
29884048.013995
Surface area
2679168977108214
Volume
9.435681719711E+21
Space diagonal
36600334.54156
Perimeter
63393639
Area
1.9335236626724E+14
Altitude
18300167.27078
Surface area
1.9335236626724E+14
Volume
1.1120057548543E+21
Height
9961349.3379982