231563712 has 28 divisors (see below), whose sum is σ = 612679496. Its totient is φ = 77187840.

The previous prime is 231563669. The next prime is 231563713. The reversal of 231563712 is 217365132.

231563712 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 231563712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231563713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 602839 + ... + 603222.

Almost surely, 2^231563712 is an apocalyptic number.

It is an amenable number.

231563712 is an abundant number, since it is smaller than the sum of its proper divisors (381115784).

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

231563712 is a wasteful number, since it uses less digits than its factorization.

231563712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1206076 (or 1206066 counting only the distinct ones).

The product of its digits is 7560, while the sum is 30.

The square root of 231563712 is about 15217.2176168970. The cubic root of 231563712 is about 614.0779467228.

The spelling of 231563712 in words is "two hundred thirty-one million, five hundred sixty-three thousand, seven hundred twelve".