111811134 has 16 divisors (see below), whose sum is σ = 223903872. Its totient is φ = 37223448.

The previous prime is 111811129. The next prime is 111811157. The reversal of 111811134 is 431118111.

It is a self number, because there is not a number n which added to its sum of digits gives 111811134.

It is a congruent number.

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, 6384 + ... + 16259.

It is an arithmetic number, because the mean of its divisors is an integer number (13993992).

Almost surely, 2^111811134 is an apocalyptic number.

111811134 is an abundant number, since it is smaller than the sum of its proper divisors (112092738).

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

111811134 is a wasteful number, since it uses less digits than its factorization.

111811134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23471.

The product of its digits is 96, while the sum is 21.

The square root of 111811134 is about 10574.0783995580. The cubic root of 111811134 is about 481.7573516244.

Adding to 111811134 its reverse (431118111), we get a palindrome (542929245).

The spelling of 111811134 in words is "one hundred eleven million, eight hundred eleven thousand, one hundred thirty-four".