Base | Representation |
---|---|
bin | 101100000111… |
… | …1001101100011 |
3 | 1121112011201221 |
4 | 1120033031203 |
5 | 21410142404 |
6 | 2143435511 |
7 | 400416154 |
oct | 130171543 |
9 | 47464657 |
10 | 23130979 |
11 | 12069713 |
12 | 78b5b97 |
13 | 4a3b591 |
14 | 310192b |
15 | 206d954 |
hex | 160f363 |
23130979 has 2 divisors, whose sum is σ = 23130980. Its totient is φ = 23130978.
The previous prime is 23130953. The next prime is 23130983. The reversal of 23130979 is 97903132.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 23130979 - 221 = 21033827 is a prime.
It is not a weakly prime, because it can be changed into another prime (23130179) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11565489 + 11565490.
It is an arithmetic number, because the mean of its divisors is an integer number (11565490).
Almost surely, 223130979 is an apocalyptic number.
23130979 is a deficient number, since it is larger than the sum of its proper divisors (1).
23130979 is an equidigital number, since it uses as much as digits as its factorization.
23130979 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 10206, while the sum is 34.
The square root of 23130979 is about 4809.4676420577. The cubic root of 23130979 is about 284.9255124922.
The spelling of 23130979 in words is "twenty-three million, one hundred thirty thousand, nine hundred seventy-nine".
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