31321112012132 has 24 divisors (see below), whose sum is σ = 56128233254016. Its totient is φ = 15286260554208.

The previous prime is 31321112012129. The next prime is 31321112012143. The reversal of 31321112012132 is 23121021112313.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31321112012098 and 31321112012107.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223256498 + ... + 223396745.

It is an arithmetic number, because the mean of its divisors is an integer number (2338676385584).

Almost surely, 2^{31321112012132} is an apocalyptic number.

It is an amenable number.

31321112012132 is a deficient number, since it is larger than the sum of its proper divisors (24807121241884).

31321112012132 is a wasteful number, since it uses less digits than its factorization.

31321112012132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446653667 (or 446653665 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 31321112012132 its reverse (23121021112313), we get a palindrome (54442133124445).

The spelling of 31321112012132 in words is "thirty-one trillion, three hundred twenty-one billion, one hundred twelve million, twelve thousand, one hundred thirty-two".