111441143 has 16 divisors (see below), whose sum is σ = 124259616. Its totient is φ = 99095040.

The previous prime is 111441133. The next prime is 111441163. The reversal of 111441143 is 341144111.

It is a de Polignac number, because none of the positive numbers 2^k-111441143 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 (111441133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109505 + ... + 110517.

It is an arithmetic number, because the mean of its divisors is an integer number (7766226).

Almost surely, 2^111441143 is an apocalyptic number.

111441143 is a deficient number, since it is larger than the sum of its proper divisors (12818473).

111441143 is a wasteful number, since it uses less digits than its factorization.

111441143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234.

The product of its digits is 192, while the sum is 20.

The square root of 111441143 is about 10556.5687133652. The cubic root of 111441143 is about 481.2253746212.

Adding to 111441143 its reverse (341144111), we get a palindrome (452585254).

The spelling of 111441143 in words is "one hundred eleven million, four hundred forty-one thousand, one hundred forty-three".