231299057 has 16 divisors (see below), whose sum is σ = 257463360. Its totient is φ = 206016000.

The previous prime is 231299053. The next prime is 231299071. The reversal of 231299057 is 750992132.

It is a cyclic number.

It is not a de Polignac number, because 231299057 - 2² = 231299053 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231299057.

It is not an unprimeable number, because it can be changed into a prime (231299053) 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 in 15 ways as a sum of consecutive naturals, for example, 384557 + ... + 385157.

It is an arithmetic number, because the mean of its divisors is an integer number (16091460).

Almost surely, 2^231299057 is an apocalyptic number.

It is an amenable number.

231299057 is a deficient number, since it is larger than the sum of its proper divisors (26164303).

231299057 is a wasteful number, since it uses less digits than its factorization.

231299057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 231299057 is about 15208.5192244347. The cubic root of 231299057 is about 613.8439135757.

The spelling of 231299057 in words is "two hundred thirty-one million, two hundred ninety-nine thousand, fifty-seven".