111408143 has 16 divisors (see below), whose sum is σ = 141181440. Its totient is φ = 85384800.

The previous prime is 111408139. The next prime is 111408149. The reversal of 111408143 is 341804111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 111408143 - 2² = 111408139 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 (111408149) 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, 7163 + ... + 16556.

It is an arithmetic number, because the mean of its divisors is an integer number (8823840).

Almost surely, 2^111408143 is an apocalyptic number.

111408143 is a deficient number, since it is larger than the sum of its proper divisors (29773297).

111408143 is a wasteful number, since it uses less digits than its factorization.

111408143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23798.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 111408143 is about 10555.0055897664. The cubic root of 111408143 is about 481.1778697091.

The spelling of 111408143 in words is "one hundred eleven million, four hundred eight thousand, one hundred forty-three".