111823679 has 4 divisors (see below), whose sum is σ = 121989480. Its totient is φ = 101657880.

The previous prime is 111823643. The next prime is 111823697. The reversal of 111823679 is 976328111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 976328111 = 11 ⋅88757101.

It is a cyclic number.

It is not a de Polignac number, because 111823679 - 2²⁰ = 110775103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111823619) 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, 5082884 + ... + 5082905.

It is an arithmetic number, because the mean of its divisors is an integer number (30497370).

Almost surely, 2^111823679 is an apocalyptic number.

111823679 is a deficient number, since it is larger than the sum of its proper divisors (10165801).

111823679 is a wasteful number, since it uses less digits than its factorization.

111823679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10165800.

The product of its digits is 18144, while the sum is 38.

The square root of 111823679 is about 10574.6715788246. The cubic root of 111823679 is about 481.7753683750.

The spelling of 111823679 in words is "one hundred eleven million, eight hundred twenty-three thousand, six hundred seventy-nine".