215686931 is an odd 9-digits prime number following 215686930
and preceding 215686932 . In scientific notation, it is written as 2.15686931 × 10^8.
The sum of its digits is 41. It has a total of 1 prime factors and 2 positive divisors.
There are 215686930 positive integers (up to 215686931) that are relatively prime to 215686931.
215686931 has 2 divisors, whose sum is 215686932
The reverse of 215686931 is 139686512
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 9
Sum of Digits 41
Digital Root 5
Name
two hundred fifteen million six hundred eighty-six thousand nine hundred thirty-one
Scientific notation
2.15686931 × 10^8
Engineering notation
2.15686931 × 10^6
Prime Factorization
215686931
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
215686931
Product of the distinct prime numbers
The prime factorization of 215686931 is 215686931.
Since it has a total of 1 prime factors.
3 , 6 , 80 , 72 , 68 , 464 , 9479 , 8357 , 52101 , 78481 , 242368 , 86607 , 6509529 , 1268273 , 26302240 , 91550867 , 180864660 , 685231601 , 3706313576 , 8968267015
n×2
431373862
n×3
647060793
n×4
862747724
n×5
1078434655
n÷2
107843465.5
n÷3
71895643.666667
n÷3
53921732.75
n÷5
43137386.2
n2
46520852204198761
n3
1.0033939839428E+25
n4
2.1641896898049E+33
n5
4.6678743229586E+41
2 √n
14686.28377092
3 √n
599.70998113398
4 √n
121.18697855347
5 √n
46.426374056874
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
215686932
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
107843466
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
14686.283804966
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999907273
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 215686931 can be divided by 2 positive divisors.
The sum of these divisors (counting 215686931) is 215686932, the average is 107843466.
Base
System
Value
2
Binary
1100110110110001111100010011
3
Ternary
120000212000211212
4
Quaternary
30312301330103
5
Quinary
420203440211
6
Senary
33222530335
8
Octal
1466617423
10
Decimal
215686931
12
Duodecimal
602969ab
16
Hexadecimal
cdb1f13
20
Vigesimal
3780h6b
36
Base36
3kex3n
md5
41925433282a9545aec7d3e40b608997
sha1
3908f16440f0dd377afa1b2d6623578fc779e41e
sha256
27b44b027d995c6a4d0a2fe69de37e1336e27071f518729b4d3bc98e33a276c3
sha512
4fac96a7921d71f215343e0430991977b3b8262780587756ef9e3b7467ea5f4f63e955a3c4ced3fc53aaba7ef845f944739e266f94e76a2fa0b8440bed6d791e
ripemd-160
7f9bbd83c5066fb6905fcaf14e3926bce52aaa7d
Diameter
431373862
Circumference
1355200955.8099
Area
1.4614956752345E+17
Volume
4.2030068914813E+25
Surface area
5.8459827009379E+17
Circumference
1355200955.8099
Perimeter
862747724
Area
46520852204198761
Diagonal
305027383.04683
Surface area
279125113225192566
Volume
1.0033939839428E+25
Space diagonal
373580723.0206
Perimeter
647060793
Area
2.0144119907269E+16
Altitude
186790361.5103
Surface area
2.0144119907269E+16
Volume
1.1825111504129E+24
Height
101675794.34894