111424623 has 4 divisors (see below), whose sum is σ = 148566168. Its totient is φ = 74283080.

The previous prime is 111424619. The next prime is 111424637. The reversal of 111424623 is 326424111.

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 111424623 - 2² = 111424619 is a prime.

It is a super-2 number, since 2×111424623² = 24830893221384258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111424593 and 111424602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111424123) 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, 18570768 + ... + 18570773.

It is an arithmetic number, because the mean of its divisors is an integer number (37141542).

Almost surely, 2^111424623 is an apocalyptic number.

111424623 is a deficient number, since it is larger than the sum of its proper divisors (37141545).

111424623 is an equidigital number, since it uses as much as digits as its factorization.

111424623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37141544.

The product of its digits is 1152, while the sum is 24.

The square root of 111424623 is about 10555.7862331519. The cubic root of 111424623 is about 481.2015945467.

Adding to 111424623 its reverse (326424111), we get a palindrome (437848734).

The spelling of 111424623 in words is "one hundred eleven million, four hundred twenty-four thousand, six hundred twenty-three".