243423245213 has 2 divisors, whose sum is σ = 243423245214. Its totient is φ = 243423245212.

The previous prime is 243423245171. The next prime is 243423245251. The reversal of 243423245213 is 312542324342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 217951723609 + 25471521604 = 466853^2 + 159598^2 .

It is a cyclic number.

It is not a de Polignac number, because 243423245213 - 2¹⁶ = 243423179677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243423245413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121711622606 + 121711622607.

It is an arithmetic number, because the mean of its divisors is an integer number (121711622607).

Almost surely, 2^243423245213 is an apocalyptic number.

It is an amenable number.

243423245213 is a deficient number, since it is larger than the sum of its proper divisors (1).

243423245213 is an equidigital number, since it uses as much as digits as its factorization.

243423245213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 35.

Adding to 243423245213 its reverse (312542324342), we get a palindrome (555965569555).

The spelling of 243423245213 in words is "two hundred forty-three billion, four hundred twenty-three million, two hundred forty-five thousand, two hundred thirteen".