257270131 has 2 divisors, whose sum is σ = 257270132. Its totient is φ = 257270130.

The previous prime is 257270119. The next prime is 257270141. The reversal of 257270131 is 131072752.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 257270131 - 2⁵ = 257270099 is a prime.

It is a super-2 number, since 2×257270131² = 132375840609514322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 257270131.

It is not a weakly prime, because it can be changed into another prime (257270141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128635065 + 128635066.

It is an arithmetic number, because the mean of its divisors is an integer number (128635066).

Almost surely, 2^257270131 is an apocalyptic number.

257270131 is a deficient number, since it is larger than the sum of its proper divisors (1).

257270131 is an equidigital number, since it uses as much as digits as its factorization.

257270131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 257270131 is about 16039.6424835468. The cubic root of 257270131 is about 636.0087968339.

The spelling of 257270131 in words is "two hundred fifty-seven million, two hundred seventy thousand, one hundred thirty-one".