Base | Representation |
---|---|
bin | 1111101010101… |
… | …11100110000110 |
3 | 100011022101011001 |
4 | 13311113212012 |
5 | 232121241130 |
6 | 21013003514 |
7 | 3154100101 |
oct | 765274606 |
9 | 304271131 |
10 | 131430790 |
11 | 68209997 |
12 | 3802359a |
13 | 212c9aca |
14 | 13653738 |
15 | b8126ca |
hex | 7d57986 |
131430790 has 32 divisors (see below), whose sum is σ = 254833920. Its totient is φ = 48644064.
The previous prime is 131430773. The next prime is 131430811. The reversal of 131430790 is 97034131.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127 + ... + 16213.
It is an arithmetic number, because the mean of its divisors is an integer number (7963560).
Almost surely, 2131430790 is an apocalyptic number.
131430790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
131430790 is a deficient number, since it is larger than the sum of its proper divisors (123403130).
131430790 is a wasteful number, since it uses less digits than its factorization.
131430790 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 16156.
The product of its (nonzero) digits is 2268, while the sum is 28.
The square root of 131430790 is about 11464.3268446080. The cubic root of 131430790 is about 508.4314101423.
The spelling of 131430790 in words is "one hundred thirty-one million, four hundred thirty thousand, seven hundred ninety".
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