23415143 has 2 divisors, whose sum is σ = 23415144. Its totient is φ = 23415142.

The previous prime is 23415107. The next prime is 23415149. The reversal of 23415143 is 34151432.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23415143 - 2⁶ = 23415079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23415149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11707571 + 11707572.

It is an arithmetic number, because the mean of its divisors is an integer number (11707572).

Almost surely, 2^23415143 is an apocalyptic number.

23415143 is a deficient number, since it is larger than the sum of its proper divisors (1).

23415143 is an equidigital number, since it uses as much as digits as its factorization.

23415143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 23.

The square root of 23415143 is about 4838.9196108222. The cubic root of 23415143 is about 286.0875365738.

Adding to 23415143 its reverse (34151432), we get a palindrome (57566575).

The spelling of 23415143 in words is "twenty-three million, four hundred fifteen thousand, one hundred forty-three".