Base | Representation |
---|---|
bin | 111100111010100001… |
… | …0010111101001001001 |
3 | 110111122112221021222120 |
4 | 1321311002113221021 |
5 | 4120401004334111 |
6 | 140032223241453 |
7 | 12310441351404 |
oct | 1716502275111 |
9 | 414575837876 |
10 | 130812574281 |
11 | 50528319224 |
12 | 21428a49289 |
13 | c44933ac0c |
14 | 648d388d3b |
15 | 3609371406 |
hex | 1e75097a49 |
130812574281 has 4 divisors (see below), whose sum is σ = 174416765712. Its totient is φ = 87208382852.
The previous prime is 130812574259. The next prime is 130812574307. The reversal of 130812574281 is 182475218031.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 130812574281 - 210 = 130812573257 is a prime.
It is a super-2 number, since 2×1308125742812 (a number of 23 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (130812574201) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21802095711 + ... + 21802095716.
It is an arithmetic number, because the mean of its divisors is an integer number (43604191428).
Almost surely, 2130812574281 is an apocalyptic number.
It is an amenable number.
130812574281 is a deficient number, since it is larger than the sum of its proper divisors (43604191431).
130812574281 is an equidigital number, since it uses as much as digits as its factorization.
130812574281 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 43604191430.
The product of its (nonzero) digits is 107520, while the sum is 42.
The spelling of 130812574281 in words is "one hundred thirty billion, eight hundred twelve million, five hundred seventy-four thousand, two hundred eighty-one".
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