Base | Representation |
---|---|
bin | 1111101010111… |
… | …10111001111011 |
3 | 100011100220012222 |
4 | 13311132321323 |
5 | 232123220411 |
6 | 21013354255 |
7 | 3154253303 |
oct | 765367173 |
9 | 304326188 |
10 | 131460731 |
11 | 6822a436 |
12 | 3803898b |
13 | 2130a61c |
14 | 13660603 |
15 | b81b4db |
hex | 7d5ee7b |
131460731 has 2 divisors, whose sum is σ = 131460732. Its totient is φ = 131460730.
The previous prime is 131460701. The next prime is 131460803. The reversal of 131460731 is 137064131.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 131460731 - 214 = 131444347 is a prime.
It is a super-2 number, since 2×1314607312 = 34563847590108722, which contains 22 as substring.
It is a Chen prime.
It is a self number, because there is not a number n which added to its sum of digits gives 131460731.
It is not a weakly prime, because it can be changed into another prime (131460701) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65730365 + 65730366.
It is an arithmetic number, because the mean of its divisors is an integer number (65730366).
Almost surely, 2131460731 is an apocalyptic number.
131460731 is a deficient number, since it is larger than the sum of its proper divisors (1).
131460731 is an equidigital number, since it uses as much as digits as its factorization.
131460731 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 1512, while the sum is 26.
The square root of 131460731 is about 11465.6326035679. The cubic root of 131460731 is about 508.4700154773.
The spelling of 131460731 in words is "one hundred thirty-one million, four hundred sixty thousand, seven hundred thirty-one".
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