239057131 has 2 divisors, whose sum is σ = 239057132. Its totient is φ = 239057130.

The previous prime is 239057113. The next prime is 239057173. The reversal of 239057131 is 131750932.

Together with previous prime (239057113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 239057131 - 2⁹ = 239056619 is a prime.

It is a super-2 number, since 2×239057131² = 114296623763902322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 239057093 and 239057102.

It is not a weakly prime, because it can be changed into another prime (239057431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119528565 + 119528566.

It is an arithmetic number, because the mean of its divisors is an integer number (119528566).

Almost surely, 2^239057131 is an apocalyptic number.

239057131 is a deficient number, since it is larger than the sum of its proper divisors (1).

239057131 is an equidigital number, since it uses as much as digits as its factorization.

239057131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 239057131 is about 15461.4724719219. The cubic root of 239057131 is about 620.6316239189.

The spelling of 239057131 in words is "two hundred thirty-nine million, fifty-seven thousand, one hundred thirty-one".