31233213132 has 24 divisors (see below), whose sum is σ = 79502724672. Its totient is φ = 9464610000.

The previous prime is 31233213119. The next prime is 31233213149. The reversal of 31233213132 is 23131233213.

It is a nude number because it is divisible by every one of its digits.

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, 118307494 + ... + 118307757.

It is an arithmetic number, because the mean of its divisors is an integer number (3312613528).

Almost surely, 2^31233213132 is an apocalyptic number.

It is an amenable number.

31233213132 is an abundant number, since it is smaller than the sum of its proper divisors (48269511540).

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

31233213132 is a wasteful number, since it uses less digits than its factorization.

31233213132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236615269 (or 236615267 counting only the distinct ones).

The product of its digits is 1944, while the sum is 24.

Adding to 31233213132 its reverse (23131233213), we get a palindrome (54364446345).

The spelling of 31233213132 in words is "thirty-one billion, two hundred thirty-three million, two hundred thirteen thousand, one hundred thirty-two".