31312222131332 has 24 divisors (see below), whose sum is σ = 56475684693120. Its totient is φ = 15182424306720.

The previous prime is 31312222131317. The next prime is 31312222131397. The reversal of 31312222131332 is 23313122221313.

It is a junction number, because it is equal to n+sod(n) for n = 31312222131295 and 31312222131304.

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, 763990394 + ... + 764031377.

It is an arithmetic number, because the mean of its divisors is an integer number (2353153528880).

Almost surely, 2^{31312222131332} is an apocalyptic number.

It is an amenable number.

31312222131332 is a deficient number, since it is larger than the sum of its proper divisors (25163462561788).

31312222131332 is a wasteful number, since it uses less digits than its factorization.

31312222131332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528021931 (or 1528021929 counting only the distinct ones).

The product of its digits is 7776, while the sum is 29.

Adding to 31312222131332 its reverse (23313122221313), we get a palindrome (54625344352645).

The spelling of 31312222131332 in words is "thirty-one trillion, three hundred twelve billion, two hundred twenty-two million, one hundred thirty-one thousand, three hundred thirty-two".