232257131 has 2 divisors, whose sum is σ = 232257132. Its totient is φ = 232257130.

The previous prime is 232257119. The next prime is 232257133. The reversal of 232257131 is 131752232.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 232257131 - 2¹⁰ = 232256107 is a prime.

It is a super-2 number, since 2×232257131² = 107886749800702322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 232257133, it forms a pair of twin primes.

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 232257131.

It is not a weakly prime, because it can be changed into another prime (232257133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116128565 + 116128566.

It is an arithmetic number, because the mean of its divisors is an integer number (116128566).

Almost surely, 2^232257131 is an apocalyptic number.

232257131 is a deficient number, since it is larger than the sum of its proper divisors (1).

232257131 is an equidigital number, since it uses as much as digits as its factorization.

232257131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 26.

The square root of 232257131 is about 15239.9846128531. The cubic root of 232257131 is about 614.6902893393.

The spelling of 232257131 in words is "two hundred thirty-two million, two hundred fifty-seven thousand, one hundred thirty-one".