111344143 has 4 divisors (see below), whose sum is σ = 112145320. Its totient is φ = 110542968.

The previous prime is 111344113. The next prime is 111344153. The reversal of 111344143 is 341443111.

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-111344143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111344113) 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, 400380 + ... + 400657.

It is an arithmetic number, because the mean of its divisors is an integer number (28036330).

Almost surely, 2^111344143 is an apocalyptic number.

111344143 is a deficient number, since it is larger than the sum of its proper divisors (801177).

111344143 is an equidigital number, since it uses as much as digits as its factorization.

111344143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801176.

The product of its digits is 576, while the sum is 22.

The square root of 111344143 is about 10551.9734173282. The cubic root of 111344143 is about 481.0857122250.

Adding to 111344143 its reverse (341443111), we get a palindrome (452787254).

The spelling of 111344143 in words is "one hundred eleven million, three hundred forty-four thousand, one hundred forty-three".