Base | Representation |
---|---|
bin | 1001100100001… |
… | …01100101010011 |
3 | 12120222120010021 |
4 | 10302011211103 |
5 | 131020121211 |
6 | 11543444311 |
7 | 1663006513 |
oct | 462054523 |
9 | 176876107 |
10 | 80238931 |
11 | 41324773 |
12 | 22a56697 |
13 | 13815076 |
14 | a929843 |
15 | 709e771 |
hex | 4c85953 |
80238931 has 2 divisors, whose sum is σ = 80238932. Its totient is φ = 80238930.
The previous prime is 80238923. The next prime is 80238967. The reversal of 80238931 is 13983208.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 80238931 - 23 = 80238923 is a prime.
It is a super-2 number, since 2×802389312 = 12876572096045522, which contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (80238901) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40119465 + 40119466.
It is an arithmetic number, because the mean of its divisors is an integer number (40119466).
Almost surely, 280238931 is an apocalyptic number.
80238931 is a deficient number, since it is larger than the sum of its proper divisors (1).
80238931 is an equidigital number, since it uses as much as digits as its factorization.
80238931 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 10368, while the sum is 34.
The square root of 80238931 is about 8957.6186009452. The cubic root of 80238931 is about 431.3154793523.
The spelling of 80238931 in words is "eighty million, two hundred thirty-eight thousand, nine hundred thirty-one".
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