111011923 has 4 divisors (see below), whose sum is σ = 121103928. Its totient is φ = 100919920.

The previous prime is 111011909. The next prime is 111011947. The reversal of 111011923 is 329110111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 329110111 = 11 ⋅29919101.

It is a cyclic number.

It is not a de Polignac number, because 111011923 - 2⁵ = 111011891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111011923.

It is not an unprimeable number, because it can be changed into a prime (111011983) 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, 5045986 + ... + 5046007.

It is an arithmetic number, because the mean of its divisors is an integer number (30275982).

Almost surely, 2^111011923 is an apocalyptic number.

111011923 is a deficient number, since it is larger than the sum of its proper divisors (10092005).

111011923 is a wasteful number, since it uses less digits than its factorization.

111011923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10092004.

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

The square root of 111011923 is about 10536.2195781979. The cubic root of 111011923 is about 480.6067601696.

The spelling of 111011923 in words is "one hundred eleven million, eleven thousand, nine hundred twenty-three".