31132212212 has 24 divisors (see below), whose sum is σ = 57044203776. Its totient is φ = 14838489248.

The previous prime is 31132212203. The next prime is 31132212227. The reversal of 31132212212 is 21221223113.

It is a congruent number.

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, 550508 + ... + 604419.

It is an arithmetic number, because the mean of its divisors is an integer number (2376841824).

Almost surely, 2^31132212212 is an apocalyptic number.

It is an amenable number.

31132212212 is a deficient number, since it is larger than the sum of its proper divisors (25911991564).

31132212212 is a wasteful number, since it uses less digits than its factorization.

31132212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155247 (or 1155245 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

Adding to 31132212212 its reverse (21221223113), we get a palindrome (52353435325).

The spelling of 31132212212 in words is "thirty-one billion, one hundred thirty-two million, two hundred twelve thousand, two hundred twelve".