311111112112 has 40 divisors (see below), whose sum is σ = 604156463456. Its totient is φ = 155200167936.

The previous prime is 311111112089. The next prime is 311111112133. The reversal of 311111112112 is 211211111113.

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 13400098 + ... + 13423294.

Almost surely, 2^311111112112 is an apocalyptic number.

It is an amenable number.

311111112112 is a deficient number, since it is larger than the sum of its proper divisors (293045351344).

311111112112 is a wasteful number, since it uses less digits than its factorization.

311111112112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25085 (or 25079 counting only the distinct ones).

The product of its digits is 12, while the sum is 16.

Adding to 311111112112 its reverse (211211111113), we get a palindrome (522322223225).

Subtracting from 311111112112 its reverse (211211111113), we obtain a palindrome (99900000999).

The spelling of 311111112112 in words is "three hundred eleven billion, one hundred eleven million, one hundred twelve thousand, one hundred twelve".