31113302212 has 12 divisors (see below), whose sum is σ = 54450869760. Its totient is φ = 15555910856.

The previous prime is 31113302177. The next prime is 31113302309. The reversal of 31113302212 is 21220331113.

It is a self number, because there is not a number n which added to its sum of digits gives 31113302212.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84412 + ... + 263347.

It is an arithmetic number, because the mean of its divisors is an integer number (4537572480).

Almost surely, 2^31113302212 is an apocalyptic number.

It is an amenable number.

31113302212 is a deficient number, since it is larger than the sum of its proper divisors (23337567548).

31113302212 is a wasteful number, since it uses less digits than its factorization.

31113302212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370130 (or 370128 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31113302212 its reverse (21220331113), we get a palindrome (52333633325).

The spelling of 31113302212 in words is "thirty-one billion, one hundred thirteen million, three hundred two thousand, two hundred twelve".