31312203032 has 32 divisors (see below), whose sum is σ = 67815202320. Its totient is φ = 13395594240.

The previous prime is 31312203023. The next prime is 31312203037. The reversal of 31312203032 is 23030221313.

It is a junction number, because it is equal to n+sod(n) for n = 31312202995 and 31312203013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31312203037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10463813 + ... + 10466804.

Almost surely, 2^31312203032 is an apocalyptic number.

It is an amenable number.

31312203032 is an abundant number, since it is smaller than the sum of its proper divisors (36502999288).

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

31312203032 is a wasteful number, since it uses less digits than its factorization.

31312203032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20930651 (or 20930647 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 31312203032 its reverse (23030221313), we get a palindrome (54342424345).

The spelling of 31312203032 in words is "thirty-one billion, three hundred twelve million, two hundred three thousand, thirty-two".