111443443 has 4 divisors (see below), whose sum is σ = 111730320. Its totient is φ = 111156568.

The previous prime is 111443413. The next prime is 111443447. The reversal of 111443443 is 344344111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344344111 = 131 ⋅2628581.

It is a cyclic number.

It is not a de Polignac number, because 111443443 - 2¹³ = 111435251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111443447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142855 + ... + 143632.

It is an arithmetic number, because the mean of its divisors is an integer number (27932580).

Almost surely, 2^111443443 is an apocalyptic number.

111443443 is a deficient number, since it is larger than the sum of its proper divisors (286877).

111443443 is an equidigital number, since it uses as much as digits as its factorization.

111443443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286876.

The product of its digits is 2304, while the sum is 25.

The square root of 111443443 is about 10556.6776497154. The cubic root of 111443443 is about 481.2286852200.

Adding to 111443443 its reverse (344344111), we get a palindrome (455787554).

The spelling of 111443443 in words is "one hundred eleven million, four hundred forty-three thousand, four hundred forty-three".