23143111 has 2 divisors, whose sum is σ = 23143112. Its totient is φ = 23143110.

The previous prime is 23143097. The next prime is 23143151. The reversal of 23143111 is 11134132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23143111 - 2⁵ = 23143079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23143151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11571555 + 11571556.

It is an arithmetic number, because the mean of its divisors is an integer number (11571556).

Almost surely, 2^23143111 is an apocalyptic number.

23143111 is a deficient number, since it is larger than the sum of its proper divisors (1).

23143111 is an equidigital number, since it uses as much as digits as its factorization.

23143111 is an odious number, because the sum of its binary digits is odd.

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

The square root of 23143111 is about 4810.7287389750. The cubic root of 23143111 is about 284.9753174479.

Adding to 23143111 its reverse (11134132), we get a palindrome (34277243).

The spelling of 23143111 in words is "twenty-three million, one hundred forty-three thousand, one hundred eleven".