231057969 has 16 divisors (see below), whose sum is σ = 315463680. Its totient is φ = 150362960.

The previous prime is 231057961. The next prime is 231057971. The reversal of 231057969 is 969750132.

231057969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 231057969 - 2³ = 231057961 is a prime.

It is a super-2 number, since 2×231057969² = 106775570076809922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 231057969.

It is not an unprimeable number, because it can be changed into a prime (231057961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57124 + ... + 61034.

It is an arithmetic number, because the mean of its divisors is an integer number (19716480).

Almost surely, 2^231057969 is an apocalyptic number.

It is an amenable number.

231057969 is a deficient number, since it is larger than the sum of its proper divisors (84405711).

231057969 is a wasteful number, since it uses less digits than its factorization.

231057969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4380.

The product of its (nonzero) digits is 102060, while the sum is 42.

The square root of 231057969 is about 15200.5910740339. The cubic root of 231057969 is about 613.6305651788.

The spelling of 231057969 in words is "two hundred thirty-one million, fifty-seven thousand, nine hundred sixty-nine".