111143171 has 2 divisors, whose sum is σ = 111143172. Its totient is φ = 111143170.

The previous prime is 111143119. The next prime is 111143189. The reversal of 111143171 is 171341111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111143171 - 2¹⁸ = 110881027 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (111143371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55571585 + 55571586.

It is an arithmetic number, because the mean of its divisors is an integer number (55571586).

Almost surely, 2^111143171 is an apocalyptic number.

111143171 is a deficient number, since it is larger than the sum of its proper divisors (1).

111143171 is an equidigital number, since it uses as much as digits as its factorization.

111143171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84, while the sum is 20.

The square root of 111143171 is about 10542.4461582690. The cubic root of 111143171 is about 480.7960906836.

Adding to 111143171 its reverse (171341111), we get a palindrome (282484282).

The spelling of 111143171 in words is "one hundred eleven million, one hundred forty-three thousand, one hundred seventy-one".