21531631 is an odd 8-digits composite number following 21531630
and preceding 21531632 . In scientific notation, it is written as 2.1531631 × 10^7.
The sum of its digits is 22. It has a total of 3 prime factors and 8 positive divisors.
There are 19485720 positive integers (up to 21531631) that are relatively prime to 21531631.
21531631 has 8 divisors, whose sum is 23595264
The reverse of 21531631 is 13613512
Previous prime number is 227
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 22
Digital Root 4
Name
twenty-one million five hundred thirty-one thousand six hundred thirty-one
Scientific notation
2.1531631 × 10^7
Engineering notation
2.1531631 × 10^6
Prime Factorization
11 × 227 × 8623
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21531631
Product of the distinct prime numbers
The prime factorization of 21531631 is 11 × 227 × 8623.
Since it has a total of 3 prime factors.
1 , 6 , 66 , 62 , 856 , 653 , 5159 , 3309 , 80277 , 34543 , 519302 , 458399 , 7695701 , 6694053 , 75117698 , 4078029 , 416524257 , 915085025 , 251387058 , 6770393650
n×2
43063262
n×3
64594893
n×4
86126524
n×5
107658155
n÷2
10765815.5
n÷3
7177210.3333333
n÷3
5382907.75
n÷5
4306326.2
n2
463611133520161
n3
9.9823038544478E+21
n4
2.1493528312385E+29
n5
4.6279072051032E+36
2 √n
4640.2188525974
3 √n
278.20118539085
4 √n
68.119151878142
5 √n
29.282987741714
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
-21531630
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 21531631 can be divided by 8 positive divisors.
The sum of these divisors (counting 21531631) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010010001000101111101111
3
Ternary
1111111220211211
4
Quaternary
1102020233233
5
Quinary
21003003011
6
Senary
2045255251
8
Octal
122105757
10
Decimal
21531631
12
Duodecimal
7264527
16
Hexadecimal
1488bef
20
Vigesimal
6eb91b
36
Base36
cthwv
md5
af9dd152be8d4028f303c93620177f77
sha1
db403a145724ceb4d5a58351f8e18cb1c6219792
sha256
feb8413e248ef7699acae79f4a760481e41ba335683ef2e4bec40849403a6f7d
sha512
f547216348c67527b1ee2cd2cc051b1071efb02913d1e61d4814169b80194edd3f4f53ec838b39fbcc591d5bf56e7582e98164b7f35035d65935bee71c8497f7
ripemd-160
9b9bac869ee87518d90c89f52632d9e964912ac7
Diameter
43063262
Circumference
135287227.53881
Area
1.4564773311894E+15
Volume
4.1813776606713E+22
Surface area
5.8259093247575E+15
Circumference
135287227.53881
Perimeter
86126524
Area
463611133520161
Diagonal
30450324.580213
Surface area
2781666801120966
Volume
9.9823038544478E+21
Space diagonal
37293878.861825
Perimeter
64594893
Area
2.0074950955288E+14
Altitude
18646939.430913
Surface area
2.0074950955288E+14
Volume
1.1764257912241E+21
Height
10150108.193404