111319866 has 48 divisors (see below), whose sum is σ = 287772480. Its totient is φ = 31804920.

The previous prime is 111319861. The next prime is 111319883. The reversal of 111319866 is 668913111.

It is a happy number.

It is a super-2 number, since 2×111319866² = 24784225132515912, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111319866.

It is not an unprimeable number, because it can be changed into a prime (111319861) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18390 + ... + 23681.

It is an arithmetic number, because the mean of its divisors is an integer number (5995260).

Almost surely, 2^111319866 is an apocalyptic number.

111319866 is an abundant number, since it is smaller than the sum of its proper divisors (176452614).

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

111319866 is a wasteful number, since it uses less digits than its factorization.

111319866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42096 (or 42083 counting only the distinct ones).

The product of its digits is 7776, while the sum is 36.

The square root of 111319866 is about 10550.8230010744. The cubic root of 111319866 is about 481.0507450608.

The spelling of 111319866 in words is "one hundred eleven million, three hundred nineteen thousand, eight hundred sixty-six".