111816312 has 16 divisors (see below), whose sum is σ = 279540840. Its totient is φ = 37272096.

The previous prime is 111816283. The next prime is 111816329. The reversal of 111816312 is 213618111.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 4659013 = 111816312 / (1 + 1 + 1 + 8 + 1 + 6 + 3 + 1 + 2).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2329483 + ... + 2329530.

Almost surely, 2^111816312 is an apocalyptic number.

111816312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111816312 is an abundant number, since it is smaller than the sum of its proper divisors (167724528).

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

111816312 is a wasteful number, since it uses less digits than its factorization.

111816312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4659022 (or 4659018 counting only the distinct ones).

The product of its digits is 288, while the sum is 24.

The square root of 111816312 is about 10574.3232407564. The cubic root of 111816312 is about 481.7647882751.

The spelling of 111816312 in words is "one hundred eleven million, eight hundred sixteen thousand, three hundred twelve".