111443243 has 2 divisors, whose sum is σ = 111443244. Its totient is φ = 111443242.

The previous prime is 111443231. The next prime is 111443261. The reversal of 111443243 is 342344111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111443243 - 2⁸ = 111442987 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (111449243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55721621 + 55721622.

It is an arithmetic number, because the mean of its divisors is an integer number (55721622).

Almost surely, 2^111443243 is an apocalyptic number.

111443243 is a deficient number, since it is larger than the sum of its proper divisors (1).

111443243 is an equidigital number, since it uses as much as digits as its factorization.

111443243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 23.

The square root of 111443243 is about 10556.6681770339. The cubic root of 111443243 is about 481.2283973437.

Adding to 111443243 its reverse (342344111), we get a palindrome (453787354).

The spelling of 111443243 in words is "one hundred eleven million, four hundred forty-three thousand, two hundred forty-three".