111907 has 4 divisors (see below), whose sum is σ = 114336. Its totient is φ = 109480.

The previous prime is 111893. The next prime is 111913. The reversal of 111907 is 709111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 709111 = 13 ⋅54547.

It is a cyclic number.

It is not a de Polignac number, because 111907 - 2⁷ = 111779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1144 + ... + 1237.

It is an arithmetic number, because the mean of its divisors is an integer number (28584).

2¹¹¹⁹⁰⁷ is an apocalyptic number.

111907 is a deficient number, since it is larger than the sum of its proper divisors (2429).

111907 is an equidigital number, since it uses as much as digits as its factorization.

111907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2428.

The product of its (nonzero) digits is 63, while the sum is 19.

The square root of 111907 is about 334.5250364323. The cubic root of 111907 is about 48.1894997300.

The spelling of 111907 in words is "one hundred eleven thousand, nine hundred seven".