Base | Representation |
---|---|
bin | 1111100100001… |
… | …00010001101111 |
3 | 100002200101211022 |
4 | 13302010101233 |
5 | 231411041411 |
6 | 20542244355 |
7 | 3143533436 |
oct | 762042157 |
9 | 302611738 |
10 | 130565231 |
11 | 67778655 |
12 | 378866bb |
13 | 21085b44 |
14 | 134aa11d |
15 | b6e0edb |
hex | 7c8446f |
130565231 has 2 divisors, whose sum is σ = 130565232. Its totient is φ = 130565230.
The previous prime is 130565213. The next prime is 130565251. The reversal of 130565231 is 132565031.
Together with previous prime (130565213) it forms an Ormiston pair, because they use the same digits, order apart.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 130565231 - 26 = 130565167 is a prime.
It is a super-2 number, since 2×1305652312 = 34094559092166722, which contains 22 as substring.
It is a Chen prime.
It is a self number, because there is not a number n which added to its sum of digits gives 130565231.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (130565251) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65282615 + 65282616.
It is an arithmetic number, because the mean of its divisors is an integer number (65282616).
Almost surely, 2130565231 is an apocalyptic number.
130565231 is a deficient number, since it is larger than the sum of its proper divisors (1).
130565231 is an equidigital number, since it uses as much as digits as its factorization.
130565231 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 2700, while the sum is 26.
The square root of 130565231 is about 11426.5143854108. The cubic root of 130565231 is about 507.3128315598.
The spelling of 130565231 in words is "one hundred thirty million, five hundred sixty-five thousand, two hundred thirty-one".
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