31311310022212 has 48 divisors (see below), whose sum is σ = 60885633392640. Its totient is φ = 13969012528800.

The previous prime is 31311310022207. The next prime is 31311310022219. The reversal of 31311310022212 is 21222001311313.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (31311310022219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7919268 + ... + 11195419.

It is an arithmetic number, because the mean of its divisors is an integer number (1268450695680).

Almost surely, 2^{31311310022212} is an apocalyptic number.

It is an amenable number.

31311310022212 is a deficient number, since it is larger than the sum of its proper divisors (29574323370428).

31311310022212 is a wasteful number, since it uses less digits than its factorization.

31311310022212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19115392 (or 19115390 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 31311310022212 its reverse (21222001311313), we get a palindrome (52533311333525).

The spelling of 31311310022212 in words is "thirty-one trillion, three hundred eleven billion, three hundred ten million, twenty-two thousand, two hundred twelve".