Base | Representation |
---|---|
bin | 111100101010110111… |
… | …1111110000000001011 |
3 | 110110021222012201210201 |
4 | 1321111233332000023 |
5 | 4113312120010341 |
6 | 135504152353031 |
7 | 12261435545263 |
oct | 1712557760013 |
9 | 413258181721 |
10 | 130287656971 |
11 | 50288a9306a |
12 | 213010a5777 |
13 | c394670464 |
14 | 643d7887a3 |
15 | 35c8235331 |
hex | 1e55bfe00b |
130287656971 has 4 divisors (see below), whose sum is σ = 133465404744. Its totient is φ = 127109909200.
The previous prime is 130287656959. The next prime is 130287657013. The reversal of 130287656971 is 179656782031.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 179656782031 = 641 ⋅280275791.
It is a cyclic number.
It is not a de Polignac number, because 130287656971 - 213 = 130287648779 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (130287656911) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1588873825 + ... + 1588873906.
It is an arithmetic number, because the mean of its divisors is an integer number (33366351186).
Almost surely, 2130287656971 is an apocalyptic number.
130287656971 is a deficient number, since it is larger than the sum of its proper divisors (3177747773).
130287656971 is an equidigital number, since it uses as much as digits as its factorization.
130287656971 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3177747772.
The product of its (nonzero) digits is 3810240, while the sum is 55.
The spelling of 130287656971 in words is "one hundred thirty billion, two hundred eighty-seven million, six hundred fifty-six thousand, nine hundred seventy-one".
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