111145311 has 16 divisors (see below), whose sum is σ = 165090400. Its totient is φ = 73903104.

The previous prime is 111145297. The next prime is 111145319. The reversal of 111145311 is 113541111.

It is not a de Polignac number, because 111145311 - 2⁷ = 111145183 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 (111145319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5535 + ... + 15903.

It is an arithmetic number, because the mean of its divisors is an integer number (10318150).

Almost surely, 2^111145311 is an apocalyptic number.

111145311 is a deficient number, since it is larger than the sum of its proper divisors (53945089).

111145311 is a wasteful number, since it uses less digits than its factorization.

111145311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10775 (or 10769 counting only the distinct ones).

The product of its digits is 60, while the sum is 18.

The square root of 111145311 is about 10542.5476522518. The cubic root of 111145311 is about 480.7991764844.

Adding to 111145311 its reverse (113541111), we get a palindrome (224686422).

The spelling of 111145311 in words is "one hundred eleven million, one hundred forty-five thousand, three hundred eleven".