Base | Representation |
---|---|
bin | 1111100100111… |
… | …11111101100111 |
3 | 100002220011101022 |
4 | 13302133331213 |
5 | 231423204011 |
6 | 20544521355 |
7 | 3144515156 |
oct | 762377547 |
9 | 302804338 |
10 | 130678631 |
11 | 67845876 |
12 | 3792025b |
13 | 210c5645 |
14 | 134d959d |
15 | b7148db |
hex | 7c9ff67 |
130678631 has 2 divisors, whose sum is σ = 130678632. Its totient is φ = 130678630.
The previous prime is 130678607. The next prime is 130678649. The reversal of 130678631 is 136876031.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 130678631 - 218 = 130416487 is a prime.
It is a super-2 number, since 2×1306786312 = 34153809200068322, which contains 22 as substring.
It is a Chen prime.
It is a junction number, because it is equal to n+sod(n) for n = 130678591 and 130678600.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (130648631) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65339315 + 65339316.
It is an arithmetic number, because the mean of its divisors is an integer number (65339316).
Almost surely, 2130678631 is an apocalyptic number.
130678631 is a deficient number, since it is larger than the sum of its proper divisors (1).
130678631 is an equidigital number, since it uses as much as digits as its factorization.
130678631 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 18144, while the sum is 35.
The square root of 130678631 is about 11431.4754515767. The cubic root of 130678631 is about 507.4596614301.
The spelling of 130678631 in words is "one hundred thirty million, six hundred seventy-eight thousand, six hundred thirty-one".
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