243323003617 has 2 divisors, whose sum is σ = 243323003618. Its totient is φ = 243323003616.

The previous prime is 243323003531. The next prime is 243323003633. The reversal of 243323003617 is 716300323342.

243323003617 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 210204827361 + 33118176256 = 458481^2 + 181984^2 .

It is a cyclic number.

It is not a de Polignac number, because 243323003617 - 2¹⁹ = 243322479329 is a prime.

It is not a weakly prime, because it can be changed into another prime (243323003317) 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, 121661501808 + 121661501809.

It is an arithmetic number, because the mean of its divisors is an integer number (121661501809).

Almost surely, 2^243323003617 is an apocalyptic number.

It is an amenable number.

243323003617 is a deficient number, since it is larger than the sum of its proper divisors (1).

243323003617 is an equidigital number, since it uses as much as digits as its factorization.

243323003617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 34.

Adding to 243323003617 its reverse (716300323342), we get a palindrome (959623326959).

The spelling of 243323003617 in words is "two hundred forty-three billion, three hundred twenty-three million, three thousand, six hundred seventeen".