111543443 has 8 divisors (see below), whose sum is σ = 128841840. Its totient is φ = 95438080.

The previous prime is 111543437. The next prime is 111543449. The reversal of 111543443 is 344345111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (111543437) and next prime (111543449).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111543443 - 2⁶ = 111543379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111543449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298058 + ... + 298431.

It is an arithmetic number, because the mean of its divisors is an integer number (16105230).

Almost surely, 2^111543443 is an apocalyptic number.

111543443 is a deficient number, since it is larger than the sum of its proper divisors (17298397).

111543443 is a wasteful number, since it uses less digits than its factorization.

111543443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596517.

The product of its digits is 2880, while the sum is 26.

The square root of 111543443 is about 10561.4129263087. The cubic root of 111543443 is about 481.3725802774.

Adding to 111543443 its reverse (344345111), we get a palindrome (455888554).

The spelling of 111543443 in words is "one hundred eleven million, five hundred forty-three thousand, four hundred forty-three".