231403937 has 2 divisors, whose sum is σ = 231403938. Its totient is φ = 231403936.

The previous prime is 231403903. The next prime is 231403951. The reversal of 231403937 is 739304132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140754496 + 90649441 = 11864^2 + 9521^2 .

It is a cyclic number.

It is not a de Polignac number, because 231403937 - 2⁶ = 231403873 is a prime.

It is not a weakly prime, because it can be changed into another prime (231403967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115701968 + 115701969.

It is an arithmetic number, because the mean of its divisors is an integer number (115701969).

Almost surely, 2^231403937 is an apocalyptic number.

It is an amenable number.

231403937 is a deficient number, since it is larger than the sum of its proper divisors (1).

231403937 is an equidigital number, since it uses as much as digits as its factorization.

231403937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 231403937 is about 15211.9669010947. The cubic root of 231403937 is about 613.9366798011.

The spelling of 231403937 in words is "two hundred thirty-one million, four hundred three thousand, nine hundred thirty-seven".