231951523 has 2 divisors, whose sum is σ = 231951524. Its totient is φ = 231951522.

The previous prime is 231951493. The next prime is 231951529. The reversal of 231951523 is 325159132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231951523 - 2⁵ = 231951491 is a prime.

It is not a weakly prime, because it can be changed into another prime (231951529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115975761 + 115975762.

It is an arithmetic number, because the mean of its divisors is an integer number (115975762).

Almost surely, 2^231951523 is an apocalyptic number.

231951523 is a deficient number, since it is larger than the sum of its proper divisors (1).

231951523 is an equidigital number, since it uses as much as digits as its factorization.

231951523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8100, while the sum is 31.

The square root of 231951523 is about 15229.9547931043. The cubic root of 231951523 is about 614.4205642528.

The spelling of 231951523 in words is "two hundred thirty-one million, nine hundred fifty-one thousand, five hundred twenty-three".