111111385 has 32 divisors (see below), whose sum is σ = 167215104. Its totient is φ = 68856000.

The previous prime is 111111361. The next prime is 111111391. The reversal of 111111385 is 583111111.

It is not a de Polignac number, because 111111385 - 2⁹ = 111110873 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72780 + ... + 74290.

It is an arithmetic number, because the mean of its divisors is an integer number (5225472).

Almost surely, 2^111111385 is an apocalyptic number.

It is an amenable number.

111111385 is a deficient number, since it is larger than the sum of its proper divisors (56103719).

111111385 is a wasteful number, since it uses less digits than its factorization.

111111385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1725.

The product of its digits is 120, while the sum is 22.

The square root of 111111385 is about 10540.9385255773. The cubic root of 111111385 is about 480.7502517849.

Adding to 111111385 its reverse (583111111), we get a palindrome (694222496).

The spelling of 111111385 in words is "one hundred eleven million, one hundred eleven thousand, three hundred eighty-five".