231056057 has 4 divisors (see below), whose sum is σ = 231175140. Its totient is φ = 230936976.

The previous prime is 231056039. The next prime is 231056069. The reversal of 231056057 is 750650132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 54405376 + 176650681 = 7376^2 + 13291^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231056057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231056557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56582 + ... + 60527.

It is an arithmetic number, because the mean of its divisors is an integer number (57793785).

Almost surely, 2^231056057 is an apocalyptic number.

It is an amenable number.

231056057 is a deficient number, since it is larger than the sum of its proper divisors (119083).

231056057 is a wasteful number, since it uses less digits than its factorization.

231056057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119082.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 231056057 is about 15200.5281816126. The cubic root of 231056057 is about 613.6288725806.

The spelling of 231056057 in words is "two hundred thirty-one million, fifty-six thousand, fifty-seven".