20161231 is an odd 8-digits composite number following 20161230
and preceding 20161232 . In scientific notation, it is written as 2.0161231 × 10^7.
The sum of its digits is 16. It has a total of 2 prime factors and 4 positive divisors.
There are 19877200 positive integers (up to 20161231) that are relatively prime to 20161231.
20161231 has 4 divisors, whose sum is 20445264
The reverse of 20161231 is 13216102
Previous prime number is 71
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 16
Digital Root 7
Name
twenty million one hundred sixty-one thousand two hundred thirty-one
Scientific notation
2.0161231 × 10^7
Engineering notation
2.0161231 × 10^6
Prime Factorization
71 × 283961
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20161231
Product of the distinct prime numbers
The prime factorization of 20161231 is 71 × 283961.
Since it has a total of 2 prime factors.
9 , 2 , 9 , 58 , 548 , 261 , 9921 , 5009 , 49740 , 64569 , 40450 , 785518 , 884648 , 9143969 , 58171657 , 34284544 , 835504278 , 528006881 , 3939233527 , 3391546306
n×2
40322462
n×3
60483693
n×4
80644924
n×5
100806155
n÷2
10080615.5
n÷3
6720410.3333333
n÷3
5040307.75
n÷5
4032246.2
n2
406475235435361
n3
8.1950411173917E+21
n4
1.6522211702223E+29
n5
3.3310812675943E+36
2 √n
4490.1259447815
3 √n
272.16922410038
4 √n
67.008402046173
5 √n
28.900370414941
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
-20161230
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 20161231 can be divided by 4 positive divisors.
The sum of these divisors (counting 20161231) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001100111010001011001111
3
Ternary
1101221022000021
4
Quaternary
1030322023033
5
Quinary
20130124411
6
Senary
2000043011
8
Octal
114721317
10
Decimal
20161231
12
Duodecimal
6903467
16
Hexadecimal
133a2cf
20
Vigesimal
66031b
36
Base36
c04i7
md5
2fb00ad3a214f7369e7a95f566f485e3
sha1
f0a8399ce7d3fc2b492e7927787e5b0d18c490a2
sha256
5e97f76fc1900ec3c07719592b388c5ec4b739025535c181108d744b1c3d9fe0
sha512
6f8b6c3e59641fcc7d5adec918d56aed903bf1c202f8406be5f7b92ff629e64350cc08081bfdfa5f55c5299eb9ee60a564a274f1156e58c3d9f6bf094df0152a
ripemd-160
8303237b7c2cb6f5464e024421202d31c8ac9cba
Diameter
40322462
Circumference
126676750.39385
Area
1.2769796135099E+15
Volume
3.4327307960352E+22
Surface area
5.1079184540396E+15
Circumference
126676750.39385
Perimeter
80644924
Area
406475235435361
Diagonal
28512286.314337
Surface area
2438851412612166
Volume
8.1950411173917E+21
Space diagonal
34920276.435133
Perimeter
60483693
Area
1.7600893994814E+14
Altitude
17460138.217566
Surface area
1.7600893994814E+14
Volume
9.6579485770171E+20
Height
9504095.4381123