111111111110311 has 12 divisors (see below), whose sum is σ = 120316678660200. Its totient is φ = 102563167580640.

The previous prime is 111111111110281. The next prime is 111111111110323. The reversal of 111111111110311 is 113011111111111.

It is a de Polignac number, because none of the positive numbers 2^k-111111111110311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111111111110381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15950140 + ... + 21831838.

It is an arithmetic number, because the mean of its divisors is an integer number (10026389888350).

Almost surely, 2^{111111111110311} is an apocalyptic number.

111111111110311 is a deficient number, since it is larger than the sum of its proper divisors (9205567549889).

111111111110311 is a wasteful number, since it uses less digits than its factorization.

111111111110311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5993506 (or 5993493 counting only the distinct ones).

The product of its (nonzero) digits is 3, while the sum is 16.

Adding to 111111111110311 its reverse (113011111111111), we get a palindrome (224122222221422).

The spelling of 111111111110311 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred eleven million, one hundred ten thousand, three hundred eleven".