231332321132 has 48 divisors (see below), whose sum is σ = 469136562048. Its totient is φ = 98643237120.

The previous prime is 231332321119. The next prime is 231332321147. The reversal of 231332321132 is 231123233132.

It is a super-2 number, since 2×231332321132² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 274058 + ... + 733329.

It is an arithmetic number, because the mean of its divisors is an integer number (9773678376).

Almost surely, 2^231332321132 is an apocalyptic number.

231332321132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

231332321132 is an abundant number, since it is smaller than the sum of its proper divisors (237804240916).

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

231332321132 is a wasteful number, since it uses less digits than its factorization.

231332321132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007726 (or 1007724 counting only the distinct ones).

The product of its digits is 3888, while the sum is 26.

Adding to 231332321132 its reverse (231123233132), we get a palindrome (462455554264).

The spelling of 231332321132 in words is "two hundred thirty-one billion, three hundred thirty-two million, three hundred twenty-one thousand, one hundred thirty-two".