111230143 has 2 divisors, whose sum is σ = 111230144. Its totient is φ = 111230142.

The previous prime is 111230137. The next prime is 111230159. The reversal of 111230143 is 341032111.

It is an a-pointer prime, because the next prime (111230159) can be obtained adding 111230143 to its sum of digits (16).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111230143 - 2⁹ = 111229631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111230113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55615071 + 55615072.

It is an arithmetic number, because the mean of its divisors is an integer number (55615072).

Almost surely, 2^111230143 is an apocalyptic number.

111230143 is a deficient number, since it is larger than the sum of its proper divisors (1).

111230143 is an equidigital number, since it uses as much as digits as its factorization.

111230143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 111230143 is about 10546.5702007809. The cubic root of 111230143 is about 480.9214691923.

Adding to 111230143 its reverse (341032111), we get a palindrome (452262254).

The spelling of 111230143 in words is "one hundred eleven million, two hundred thirty thousand, one hundred forty-three".