Base | Representation |
---|---|
bin | 111101000110111101… |
… | …1111111010001110111 |
3 | 110112201200000120212112 |
4 | 1322031323333101313 |
5 | 4122224431111043 |
6 | 140141505241235 |
7 | 12324003263120 |
oct | 1721573772167 |
9 | 415650016775 |
10 | 131230332023 |
11 | 5072211285a |
12 | 2152493321b |
13 | c4b4a5914b |
14 | 64cca53047 |
15 | 3630d91518 |
hex | 1e8deff477 |
131230332023 has 4 divisors (see below), whose sum is σ = 149977522320. Its totient is φ = 112483141728.
The previous prime is 131230332011. The next prime is 131230332043. The reversal of 131230332023 is 320233032131.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320233032131 = 43 ⋅7447279817.
It is a cyclic number.
It is not a de Polignac number, because 131230332023 - 210 = 131230330999 is a prime.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 131230332023.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (131230332043) 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, 9373595138 + ... + 9373595151.
It is an arithmetic number, because the mean of its divisors is an integer number (37494380580).
Almost surely, 2131230332023 is an apocalyptic number.
131230332023 is a deficient number, since it is larger than the sum of its proper divisors (18747190297).
131230332023 is an equidigital number, since it uses as much as digits as its factorization.
131230332023 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 18747190296.
The product of its (nonzero) digits is 1944, while the sum is 23.
Adding to 131230332023 its reverse (320233032131), we get a palindrome (451463364154).
The spelling of 131230332023 in words is "one hundred thirty-one billion, two hundred thirty million, three hundred thirty-two thousand, twenty-three".
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