111572423 has 4 divisors (see below), whose sum is σ = 111687600. Its totient is φ = 111457248.

The previous prime is 111572413. The next prime is 111572429. The reversal of 111572423 is 324275111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111572423 - 2¹⁶ = 111506887 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111572392 and 111572401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111572429) 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, 56123 + ... + 58076.

It is an arithmetic number, because the mean of its divisors is an integer number (27921900).

Almost surely, 2^111572423 is an apocalyptic number.

111572423 is a deficient number, since it is larger than the sum of its proper divisors (115177).

111572423 is an equidigital number, since it uses as much as digits as its factorization.

111572423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115176.

The product of its digits is 1680, while the sum is 26.

The square root of 111572423 is about 10562.7848127281. The cubic root of 111572423 is about 481.4142649910.

The spelling of 111572423 in words is "one hundred eleven million, five hundred seventy-two thousand, four hundred twenty-three".