111285985 has 16 divisors (see below), whose sum is σ = 135858240. Its totient is φ = 87497280.

The previous prime is 111285953. The next prime is 111285991. The reversal of 111285985 is 589582111.

It is not a de Polignac number, because 111285985 - 2⁵ = 111285953 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94450 + ... + 95620.

It is an arithmetic number, because the mean of its divisors is an integer number (8491140).

Almost surely, 2^111285985 is an apocalyptic number.

It is an amenable number.

111285985 is a deficient number, since it is larger than the sum of its proper divisors (24572255).

111285985 is a wasteful number, since it uses less digits than its factorization.

111285985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488.

The product of its digits is 28800, while the sum is 40.

The square root of 111285985 is about 10549.2172695418. The cubic root of 111285985 is about 481.0019363600.

The spelling of 111285985 in words is "one hundred eleven million, two hundred eighty-five thousand, nine hundred eighty-five".