111423223 has 4 divisors (see below), whose sum is σ = 111505288. Its totient is φ = 111341160.

The previous prime is 111423203. The next prime is 111423233. The reversal of 111423223 is 322324111.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111423223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111423223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111423203) 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, 38961 + ... + 41722.

It is an arithmetic number, because the mean of its divisors is an integer number (27876322).

Almost surely, 2^111423223 is an apocalyptic number.

111423223 is a deficient number, since it is larger than the sum of its proper divisors (82065).

111423223 is an equidigital number, since it uses as much as digits as its factorization.

111423223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82064.

The product of its digits is 288, while the sum is 19.

The square root of 111423223 is about 10555.7199186034. The cubic root of 111423223 is about 481.1995791781.

Adding to 111423223 its reverse (322324111), we get a palindrome (433747334).

It can be divided in two parts, 11142 and 3223, that added together give a triangular number (14365 = T₁₆₉).

The spelling of 111423223 in words is "one hundred eleven million, four hundred twenty-three thousand, two hundred twenty-three".