31102321332 has 24 divisors (see below), whose sum is σ = 72948109696. Its totient is φ = 10313722368.

The previous prime is 31102321309. The next prime is 31102321333. The reversal of 31102321332 is 23312320113.

It is a junction number, because it is equal to n+sod(n) for n = 31102321299 and 31102321308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31102321333) 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, 6712348 + ... + 6716979.

Almost surely, 2^31102321332 is an apocalyptic number.

It is an amenable number.

31102321332 is an abundant number, since it is smaller than the sum of its proper divisors (41845788364).

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

31102321332 is a wasteful number, since it uses less digits than its factorization.

31102321332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13429527 (or 13429525 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 31102321332 its reverse (23312320113), we get a palindrome (54414641445).

The spelling of 31102321332 in words is "thirty-one billion, one hundred two million, three hundred twenty-one thousand, three hundred thirty-two".