Base | Representation |
---|---|
bin | 1111100000101… |
… | …00001001100101 |
3 | 100001211001211011 |
4 | 13300110021211 |
5 | 231301342312 |
6 | 20524342221 |
7 | 3136611442 |
oct | 760241145 |
9 | 301731734 |
10 | 130105957 |
11 | 67494593 |
12 | 376a4971 |
13 | 20c54a97 |
14 | 133ca9c9 |
15 | b64eda7 |
hex | 7c14265 |
130105957 has 2 divisors, whose sum is σ = 130105958. Its totient is φ = 130105956.
The previous prime is 130105933. The next prime is 130106017. The reversal of 130105957 is 759501031.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 72437121 + 57668836 = 8511^2 + 7594^2 .
It is a cyclic number.
It is not a de Polignac number, because 130105957 - 215 = 130073189 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (130102957) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65052978 + 65052979.
It is an arithmetic number, because the mean of its divisors is an integer number (65052979).
Almost surely, 2130105957 is an apocalyptic number.
It is an amenable number.
130105957 is a deficient number, since it is larger than the sum of its proper divisors (1).
130105957 is an equidigital number, since it uses as much as digits as its factorization.
130105957 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 4725, while the sum is 31.
The square root of 130105957 is about 11406.3998264132. The cubic root of 130105957 is about 506.7172944466.
Adding to 130105957 its reverse (759501031), we get a palindrome (889606988).
The spelling of 130105957 in words is "one hundred thirty million, one hundred five thousand, nine hundred fifty-seven".
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