Base | Representation |
---|---|
bin | 1111100110111… |
… | …10000010010001 |
3 | 100010101002010222 |
4 | 13303132002101 |
5 | 232004323011 |
6 | 20554202425 |
7 | 3146624342 |
oct | 763360221 |
9 | 303332128 |
10 | 130932881 |
11 | 679a98a2 |
12 | 37a23415 |
13 | 211842a1 |
14 | 135640c9 |
15 | b764ddb |
hex | 7cde091 |
130932881 has 2 divisors, whose sum is σ = 130932882. Its totient is φ = 130932880.
The previous prime is 130932877. The next prime is 130932887. The reversal of 130932881 is 188239031.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 113635600 + 17297281 = 10660^2 + 4159^2 .
It is a cyclic number.
It is not a de Polignac number, because 130932881 - 22 = 130932877 is a prime.
It is a super-2 number, since 2×1309328812 = 34286838653920322, which contains 22 as substring.
It is a Sophie Germain prime.
It is a Chen prime.
It is a Curzon number.
It is not a weakly prime, because it can be changed into another prime (130932887) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65466440 + 65466441.
It is an arithmetic number, because the mean of its divisors is an integer number (65466441).
Almost surely, 2130932881 is an apocalyptic number.
It is an amenable number.
130932881 is a deficient number, since it is larger than the sum of its proper divisors (1).
130932881 is an equidigital number, since it uses as much as digits as its factorization.
130932881 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 35.
The square root of 130932881 is about 11442.5906594617. The cubic root of 130932881 is about 507.7885548712.
The spelling of 130932881 in words is "one hundred thirty million, nine hundred thirty-two thousand, eight hundred eighty-one".
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