220031131232 has 24 divisors (see below), whose sum is σ = 472566862152. Its totient is φ = 100014150400.

The previous prime is 220031131231. The next prime is 220031131241. The reversal of 220031131232 is 232131130022.

It is a super-2 number, since 2×220031131232² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220031131231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312543869 + ... + 312544572.

It is an arithmetic number, because the mean of its divisors is an integer number (19690285923).

Almost surely, 2^220031131232 is an apocalyptic number.

220031131232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

220031131232 is an abundant number, since it is smaller than the sum of its proper divisors (252535730920).

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

220031131232 is a wasteful number, since it uses less digits than its factorization.

220031131232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625088462 (or 625088454 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 220031131232 its reverse (232131130022), we get a palindrome (452162261254).

The spelling of 220031131232 in words is "two hundred twenty billion, thirty-one million, one hundred thirty-one thousand, two hundred thirty-two".