111027143 has 2 divisors, whose sum is σ = 111027144. Its totient is φ = 111027142.

The previous prime is 111027131. The next prime is 111027149. The reversal of 111027143 is 341720111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111027143 - 2⁶ = 111027079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111027149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55513571 + 55513572.

It is an arithmetic number, because the mean of its divisors is an integer number (55513572).

Almost surely, 2^111027143 is an apocalyptic number.

111027143 is a deficient number, since it is larger than the sum of its proper divisors (1).

111027143 is an equidigital number, since it uses as much as digits as its factorization.

111027143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 111027143 is about 10536.9418238880. The cubic root of 111027143 is about 480.6287232778.

Adding to 111027143 its reverse (341720111), we get a palindrome (452747254).

The spelling of 111027143 in words is "one hundred eleven million, twenty-seven thousand, one hundred forty-three".