Base | Representation |
---|---|
bin | 111101000110111110… |
… | …0011110000111101001 |
3 | 110112201200021000011010 |
4 | 1322031330132013221 |
5 | 4122224444131340 |
6 | 140141512054133 |
7 | 12324004330320 |
oct | 1721574360751 |
9 | 415650230133 |
10 | 131230458345 |
11 | 50722199758 |
12 | 21524994349 |
13 | c4b4aa17ac |
14 | 64cca870b7 |
15 | 3630db8b80 |
hex | 1e8df1e1e9 |
131230458345 has 32 divisors (see below), whose sum is σ = 240337585152. Its totient is φ = 59897737152.
The previous prime is 131230458311. The next prime is 131230458347. The reversal of 131230458345 is 543854032131.
It is not a de Polignac number, because 131230458345 - 210 = 131230457321 is a prime.
It is not an unprimeable number, because it can be changed into a prime (131230458347) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 904347 + ... + 1039376.
It is an arithmetic number, because the mean of its divisors is an integer number (7510549536).
Almost surely, 2131230458345 is an apocalyptic number.
131230458345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
131230458345 is a deficient number, since it is larger than the sum of its proper divisors (109107126807).
131230458345 is a wasteful number, since it uses less digits than its factorization.
131230458345 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1944381.
The product of its (nonzero) digits is 172800, while the sum is 39.
The spelling of 131230458345 in words is "one hundred thirty-one billion, two hundred thirty million, four hundred fifty-eight thousand, three hundred forty-five".
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