231057504 has 36 divisors (see below), whose sum is σ = 657070596. Its totient is φ = 77019072.

The previous prime is 231057503. The next prime is 231057551. The reversal of 231057504 is 405750132.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231057503) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 400854 + ... + 401429.

It is an arithmetic number, because the mean of its divisors is an integer number (18251961).

Almost surely, 2^231057504 is an apocalyptic number.

231057504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

231057504 is an abundant number, since it is smaller than the sum of its proper divisors (426013092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231057504 is a wasteful number, since it uses less digits than its factorization.

231057504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802299 (or 802288 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 231057504 is about 15200.5757785684. The cubic root of 231057504 is about 613.6301535384.

The spelling of 231057504 in words is "two hundred thirty-one million, fifty-seven thousand, five hundred four".