111313111 has 16 divisors (see below), whose sum is σ = 140191744. Its totient is φ = 86020704.

The previous prime is 111313099. The next prime is 111313121.

111313111 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 111313111 - 2⁵ = 111313079 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 111313091 and 111313100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111313121) 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, 10311 + ... + 18136.

It is an arithmetic number, because the mean of its divisors is an integer number (8761984).

Almost surely, 2^111313111 is an apocalyptic number.

111313111 is a deficient number, since it is larger than the sum of its proper divisors (28878633).

111313111 is a wasteful number, since it uses less digits than its factorization.

111313111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28510.

The product of its digits is 9, while the sum is 13.

The square root of 111313111 is about 10550.5028790101. The cubic root of 111313111 is about 481.0410146517.

The spelling of 111313111 in words is "one hundred eleven million, three hundred thirteen thousand, one hundred eleven".