31231223032332 has 48 divisors (see below), whose sum is σ = 73634859710720. Its totient is φ = 10301792404032.

The previous prime is 31231223032271. The next prime is 31231223032379. The reversal of 31231223032332 is 23323032213213.

It is a self number, because there is not a number n which added to its sum of digits gives 31231223032332.

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, 14140288 + ... + 16199079.

Almost surely, 2^{31231223032332} is an apocalyptic number.

It is an amenable number.

31231223032332 is an abundant number, since it is smaller than the sum of its proper divisors (42403636678388).

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

31231223032332 is a wasteful number, since it uses less digits than its factorization.

31231223032332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30340270 (or 30340268 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 30.

Adding to 31231223032332 its reverse (23323032213213), we get a palindrome (54554255245545).

The spelling of 31231223032332 in words is "thirty-one trillion, two hundred thirty-one billion, two hundred twenty-three million, thirty-two thousand, three hundred thirty-two".