23243543 has 2 divisors, whose sum is σ = 23243544. Its totient is φ = 23243542.

The previous prime is 23243497. The next prime is 23243599. The reversal of 23243543 is 34534232.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23243543 - 2⁸ = 23243287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23243243) 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, 11621771 + 11621772.

It is an arithmetic number, because the mean of its divisors is an integer number (11621772).

Almost surely, 2^23243543 is an apocalyptic number.

23243543 is a deficient number, since it is larger than the sum of its proper divisors (1).

23243543 is an equidigital number, since it uses as much as digits as its factorization.

23243543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 26.

The square root of 23243543 is about 4821.1557742931. The cubic root of 23243543 is about 285.3869495146.

Adding to 23243543 its reverse (34534232), we get a palindrome (57777775).

The spelling of 23243543 in words is "twenty-three million, two hundred forty-three thousand, five hundred forty-three".