31222042032 has 20 divisors (see below), whose sum is σ = 80656942040. Its totient is φ = 10407347328.

The previous prime is 31222042021. The next prime is 31222042039. The reversal of 31222042032 is 23024022213.

It is not an unprimeable number, because it can be changed into a prime (31222042039) 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, 325229557 + ... + 325229652.

It is an arithmetic number, because the mean of its divisors is an integer number (4032847102).

Almost surely, 2^31222042032 is an apocalyptic number.

It is an amenable number.

31222042032 is an abundant number, since it is smaller than the sum of its proper divisors (49434900008).

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

31222042032 is a wasteful number, since it uses less digits than its factorization.

31222042032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650459220 (or 650459214 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 31222042032 its reverse (23024022213), we get a palindrome (54246064245).

The spelling of 31222042032 in words is "thirty-one billion, two hundred twenty-two million, forty-two thousand, thirty-two".