Base | Representation |
---|---|
bin | 111101001011101101… |
… | …0001111100011100101 |
3 | 110120010202001212021020 |
4 | 1322113122033203211 |
5 | 4123041122223312 |
6 | 140205343441353 |
7 | 12330643160046 |
oct | 1722732174345 |
9 | 416122055236 |
10 | 131389257957 |
11 | 507a38a1201 |
12 | 21569bb6259 |
13 | c50b961a69 |
14 | 6505bc28cd |
15 | 363ecd578c |
hex | 1e9768f8e5 |
131389257957 has 16 divisors (see below), whose sum is σ = 184513264320. Its totient is φ = 82934409600.
The previous prime is 131389257899. The next prime is 131389258003. The reversal of 131389257957 is 759752983131.
It is not a de Polignac number, because 131389257957 - 27 = 131389257829 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 131389257957.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (131389257457) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 571594 + ... + 767787.
It is an arithmetic number, because the mean of its divisors is an integer number (11532079020).
Almost surely, 2131389257957 is an apocalyptic number.
It is an amenable number.
131389257957 is a deficient number, since it is larger than the sum of its proper divisors (53124006363).
131389257957 is a wasteful number, since it uses less digits than its factorization.
131389257957 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1341124.
The product of its digits is 14288400, while the sum is 60.
The spelling of 131389257957 in words is "one hundred thirty-one billion, three hundred eighty-nine million, two hundred fifty-seven thousand, nine hundred fifty-seven".
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