231332220320 has 48 divisors (see below), whose sum is σ = 546714477288. Its totient is φ = 92500362240.

The previous prime is 231332220307. The next prime is 231332220337. The reversal of 231332220320 is 23022233132.

It can be written as a sum of positive squares in 4 ways, for example, as 168188571664 + 63143648656 = 410108^2 + 251284^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205082 + ... + 710438.

Almost surely, 2^231332220320 is an apocalyptic number.

231332220320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231332220320 is an abundant number, since it is smaller than the sum of its proper divisors (315382256968).

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

231332220320 is a wasteful number, since it uses less digits than its factorization.

231332220320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508233 (or 508225 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 231332220320 its reverse (23022233132), we get a palindrome (254354453452).

The spelling of 231332220320 in words is "two hundred thirty-one billion, three hundred thirty-two million, two hundred twenty thousand, three hundred twenty".