21231213 is an odd 8-digits composite number following 21231212
and preceding 21231214 . In scientific notation, it is written as 2.1231213 × 10^7.
The sum of its digits is 15. It has a total of 2 prime factors and 4 positive divisors.
There are 14154140 positive integers (up to 21231213) that are relatively prime to 21231213.
21231213 has 4 divisors, whose sum is 28308288
The reverse of 21231213 is 31213212
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 15
Digital Root 6
Name
twenty-one million two hundred thirty-one thousand two hundred thirteen
Scientific notation
2.1231213 × 10^7
Engineering notation
2.1231213 × 10^6
Prime Factorization
3 × 7077071
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21231213
Product of the distinct prime numbers
The prime factorization of 21231213 is 3 × 7077071.
Since it has a total of 2 prime factors.
9 , 10 , 100 , 80 , 778 , 957 , 7689 , 4719 , 92711 , 39209 , 849024 , 142784 , 727232 , 5843133 , 51914402 , 18779512 , 339007455 , 901834911 , 8384253106 , 5192960381
n×2
42462426
n×3
63693639
n×4
84924852
n×5
106156065
n÷2
10615606.5
n÷3
7077071
n÷3
5307803.25
n÷5
4246242.6
n2
450764405451369
n3
9.5702751049564E+21
n4
2.0318854922193E+29
n5
4.3139393676917E+36
2 √n
4607.7340418041
3 √n
276.90126244947
4 √n
67.880291998518
5 √n
29.200814234689
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
-21231212
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 21231213 can be divided by 4 positive divisors.
The sum of these divisors (counting 21231213) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000111111011001101101
3
Ternary
1110221122202020
4
Quaternary
1100333121231
5
Quinary
20413344323
6
Senary
2035020353
8
Octal
120773155
10
Decimal
21231213
12
Duodecimal
713a6b9
16
Hexadecimal
143f66d
20
Vigesimal
6cdi0d
36
Base36
cn23x
md5
7ab69eed34767bc8a886476f41ad906d
sha1
2b9b0425756f092115418341580c51254d58065a
sha256
045a6b85c1f90b5a89e47f6c22f58408b83940e1c9f589a0eeb5e83fa3a74212
sha512
a06d916bd38c20ce72780e443b6649dbf5cc1f8e7a8df5ac0b066c54b23a631e4cbc72bb22b4cb1abe868750999a61a64bd485ea4310be30097358aa8a644d4c
ripemd-160
a09f733a38f6f8a5ccf6b79c06381cbcbc9007ed
Diameter
42462426
Circumference
133399645.5752
Area
1.4161181446658E+15
Volume
4.0087874616752E+22
Surface area
5.6644725786632E+15
Circumference
133399645.5752
Perimeter
84924852
Area
450764405451369
Diagonal
30025469.370232
Surface area
2704586432708214
Volume
9.5702751049564E+21
Space diagonal
36773539.622317
Perimeter
63693639
Area
1.9518671312134E+14
Altitude
18386769.811158
Surface area
1.9518671312134E+14
Volume
1.1278677374226E+21
Height
10008489.790077