31123023320332 has 12 divisors (see below), whose sum is σ = 54466252421616. Its totient is φ = 15561236914160.

The previous prime is 31123023320321. The next prime is 31123023320341. The reversal of 31123023320332 is 23302332032113.

It is a self number, because there is not a number n which added to its sum of digits gives 31123023320332.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68431519 + ... + 68884822.

It is an arithmetic number, because the mean of its divisors is an integer number (4538854368468).

Almost surely, 2^{31123023320332} is an apocalyptic number.

It is an amenable number.

31123023320332 is a deficient number, since it is larger than the sum of its proper divisors (23343229101284).

31123023320332 is a wasteful number, since it uses less digits than its factorization.

31123023320332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137373008 (or 137373006 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 28.

Adding to 31123023320332 its reverse (23302332032113), we get a palindrome (54425355352445).

The spelling of 31123023320332 in words is "thirty-one trillion, one hundred twenty-three billion, twenty-three million, three hundred twenty thousand, three hundred thirty-two".