31321233322212 has 96 divisors (see below), whose sum is σ = 74098438364160. Its totient is φ = 10296201203200.

The previous prime is 31321233322207. The next prime is 31321233322259. The reversal of 31321233322212 is 21222333212313.

It is a super-2 number, since 2×31321233322212² (a number of 28 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 31321233322212.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 490596589 + ... + 490660427.

It is an arithmetic number, because the mean of its divisors is an integer number (771858732960).

Almost surely, 2^{31321233322212} is an apocalyptic number.

It is an amenable number.

31321233322212 is an abundant number, since it is smaller than the sum of its proper divisors (42777205041948).

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

31321233322212 is a wasteful number, since it uses less digits than its factorization.

31321233322212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65541 (or 65539 counting only the distinct ones).

The product of its digits is 15552, while the sum is 30.

Adding to 31321233322212 its reverse (21222333212313), we get a palindrome (52543566534525).

The spelling of 31321233322212 in words is "thirty-one trillion, three hundred twenty-one billion, two hundred thirty-three million, three hundred twenty-two thousand, two hundred twelve".