23315205443 has 2 divisors, whose sum is σ = 23315205444. Its totient is φ = 23315205442.

The previous prime is 23315205439. The next prime is 23315205451. The reversal of 23315205443 is 34450251332.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23315205443 - 2² = 23315205439 is a prime.

It is not a weakly prime, because it can be changed into another prime (23315205413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11657602721 + 11657602722.

It is an arithmetic number, because the mean of its divisors is an integer number (11657602722).

Almost surely, 2^23315205443 is an apocalyptic number.

23315205443 is a deficient number, since it is larger than the sum of its proper divisors (1).

23315205443 is an equidigital number, since it uses as much as digits as its factorization.

23315205443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 32.

Adding to 23315205443 its reverse (34450251332), we get a palindrome (57765456775).

The spelling of 23315205443 in words is "twenty-three billion, three hundred fifteen million, two hundred five thousand, four hundred forty-three".