31820 is an even 5-digits composite number following 31819
and preceding 31821 . In scientific notation, it is written as 3.1820 × 10^4.
The sum of its digits is 14. It has a total of 4 prime factors and 12 positive divisors.
There are 12096 positive integers (up to 31820) that are relatively prime to 31820.
31820 has 12 divisors, whose sum is 57288
The reverse of 31820 is 02813
Previous prime number is 185
Is Prime? no
Number parity even
Number length 5
Sum of Digits 14
Digital Root 5
Name
thirty-one thousand eight hundred twenty
Scientific notation
3.1820 × 10^4
Engineering notation
3.1820 × 10^3
Prime Factorization
2 × 2 × 185 × 43
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
15910
Product of the distinct prime numbers
The prime factorization of 31820 is 2 × 2 × 185 × 43.
Since it has a total of 4 prime factors.
7 , 9 , 72 , 93 , 701 , 175 , 1795 , 8043 , 98921 , 9671 , 126536 , 216728 , 1612461 , 8793995 , 89395811 , 73210353 , 356912555 , 817512486 , 7441358807 , 4731706768
n×2
63640
n×3
95460
n×4
127280
n×5
159100
n÷2
15910
n÷3
10606.666666667
n÷3
7955
n÷5
6364
n2
1012512400
n3
32218144568000
n4
1025181360153760000
n5
3.2621270880093E+22
2 √n
178.38161340228
3 √n
31.688381535671
4 √n
13.355957973963
5 √n
7.9531657772677
1 , 2 , 4 , 43 , 86 , 172 , 185 , 370 , 740 , 7955 , 15910 , 31820
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
-31819
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 31820 can be divided by 12 positive divisors.
The sum of these divisors (counting 31820) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
111110001001100
3
Ternary
1121122112
4
Quaternary
13301030
5
Quinary
2004240
6
Senary
403152
8
Octal
76114
10
Decimal
31820
12
Duodecimal
164b8
16
Hexadecimal
7c4c
20
Vigesimal
3jb0
36
Base36
ojw
md5
2c86a217e06d86e3db130723abd90fff
sha1
af6da530251131e2f202d5465922df4a4d1ff663
sha256
278f04d5dc97fd211feb83a0aaa9558cf67843c21ad3dac44702983067e599a2
sha512
a6267c99af6c4dfb237ae8775c131d42b225efe4358ae467352fa99bd3e23d642cb401c90b7d9101f7b770f438d8e9a4baeb6ec9c4767085bcb34b5e1a4a5f63
ripemd-160
8cfc41467ac497cb0ddc4dad80f00c701e32030a
Diameter
63640
Circumference
199930.95647445
Area
3180901517.5086
Volume
1.3495504838283E+14
Surface area
12723606070.034
Circumference
199930.95647445
Perimeter
127280
Area
1012512400
Diagonal
45000.275554712
Surface area
6075074400
Volume
32218144568000
Space diagonal
55113.856696842
Perimeter
95460
Area
438430730.02338
Altitude
27556.928348421
Surface area
438430730.02338
Volume
3796944750213.6
Height
15000.091851571