231563982320 has 60 divisors (see below), whose sum is σ = 591779962200. Its totient is φ = 84205080960.

The previous prime is 231563982289. The next prime is 231563982337. The reversal of 231563982320 is 23289365132.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11951270 + ... + 11970629.

It is an arithmetic number, because the mean of its divisors is an integer number (9862999370).

Almost surely, 2^231563982320 is an apocalyptic number.

231563982320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231563982320 is an abundant number, since it is smaller than the sum of its proper divisors (360215979880).

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

231563982320 is a wasteful number, since it uses less digits than its factorization.

231563982320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23921934 (or 23921917 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 44.

The spelling of 231563982320 in words is "two hundred thirty-one billion, five hundred sixty-three million, nine hundred eighty-two thousand, three hundred twenty".