111916 has 18 divisors (see below), whose sum is σ = 228228. Its totient is φ = 47880.

The previous prime is 111913. The next prime is 111919. The reversal of 111916 is 619111.

It is an interprime number because it is at equal distance from previous prime (111913) and next prime (111919).

It is a nialpdrome in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 111893 and 111902.

It is not an unprimeable number, because it can be changed into a prime (111913) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 90 + ... + 481.

2¹¹¹⁹¹⁶ is an apocalyptic number.

It is an amenable number.

111916 is an abundant number, since it is smaller than the sum of its proper divisors (116312).

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

111916 is a wasteful number, since it uses less digits than its factorization.

111916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589 (or 580 counting only the distinct ones).

The product of its digits is 54, while the sum is 19.

The square root of 111916 is about 334.5384880698. The cubic root of 111916 is about 48.1907915582.

The spelling of 111916 in words is "one hundred eleven thousand, nine hundred sixteen".