111143 has 2 divisors, whose sum is σ = 111144. Its totient is φ = 111142.

The previous prime is 111127. The next prime is 111149. The reversal of 111143 is 341111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111143 - 2⁴ = 111127 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55571 + 55572.

It is an arithmetic number, because the mean of its divisors is an integer number (55572).

2¹¹¹¹⁴³ is an apocalyptic number.

111143 is a deficient number, since it is larger than the sum of its proper divisors (1).

111143 is an equidigital number, since it uses as much as digits as its factorization.

111143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12, while the sum is 11.

The square root of 111143 is about 333.3811632351. The cubic root of 111143 is about 48.0795844106.

Adding to 111143 its reverse (341111), we get a palindrome (452254).

The spelling of 111143 in words is "one hundred eleven thousand, one hundred forty-three", and thus it is an iban number.