243226207823 has 2 divisors, whose sum is σ = 243226207824. Its totient is φ = 243226207822.

The previous prime is 243226207817. The next prime is 243226207871. The reversal of 243226207823 is 328702622342.

It is a happy number.

243226207823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243226207823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243226207883) 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, 121613103911 + 121613103912.

It is an arithmetic number, because the mean of its divisors is an integer number (121613103912).

Almost surely, 2^243226207823 is an apocalyptic number.

243226207823 is a deficient number, since it is larger than the sum of its proper divisors (1).

243226207823 is an equidigital number, since it uses as much as digits as its factorization.

243226207823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 387072, while the sum is 41.

The spelling of 243226207823 in words is "two hundred forty-three billion, two hundred twenty-six million, two hundred seven thousand, eight hundred twenty-three".