111432223 has 6 divisors (see below), whose sum is σ = 129625296. Its totient is φ = 95513292.

The previous prime is 111432199. The next prime is 111432247. The reversal of 111432223 is 322234111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (111432199) and next prime (111432247).

It is not a de Polignac number, because 111432223 - 2¹³ = 111424031 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 111432223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111432623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1137015 + ... + 1137112.

It is an arithmetic number, because the mean of its divisors is an integer number (21604216).

Almost surely, 2^111432223 is an apocalyptic number.

111432223 is a deficient number, since it is larger than the sum of its proper divisors (18193073).

111432223 is an equidigital number, since it uses as much as digits as its factorization.

111432223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2274141 (or 2274134 counting only the distinct ones).

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

The square root of 111432223 is about 10556.1462191465. The cubic root of 111432223 is about 481.2125348245.

Adding to 111432223 its reverse (322234111), we get a palindrome (433666334).

It can be divided in two parts, 11143 and 2223, that added together give a triangular number (13366 = T₁₆₃).

The spelling of 111432223 in words is "one hundred eleven million, four hundred thirty-two thousand, two hundred twenty-three".