231180959 has 2 divisors, whose sum is σ = 231180960. Its totient is φ = 231180958.

The previous prime is 231180949. The next prime is 231180991. The reversal of 231180959 is 959081132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231180959 - 2²⁴ = 214403743 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231180949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115590479 + 115590480.

It is an arithmetic number, because the mean of its divisors is an integer number (115590480).

Almost surely, 2^231180959 is an apocalyptic number.

231180959 is a deficient number, since it is larger than the sum of its proper divisors (1).

231180959 is an equidigital number, since it uses as much as digits as its factorization.

231180959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 231180959 is about 15204.6361021894. The cubic root of 231180959 is about 613.7394224737.

The spelling of 231180959 in words is "two hundred thirty-one million, one hundred eighty thousand, nine hundred fifty-nine".