243321323213303 has 2 divisors, whose sum is σ = 243321323213304. Its totient is φ = 243321323213302.

The previous prime is 243321323213207. The next prime is 243321323213347. The reversal of 243321323213303 is 303312323123342.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243321323213303 - 2³² = 243317028246007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243321323213203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121660661606651 + 121660661606652.

It is an arithmetic number, because the mean of its divisors is an integer number (121660661606652).

Almost surely, 2^{243321323213303} is an apocalyptic number.

243321323213303 is a deficient number, since it is larger than the sum of its proper divisors (1).

243321323213303 is an equidigital number, since it uses as much as digits as its factorization.

243321323213303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 35.

Adding to 243321323213303 its reverse (303312323123342), we get a palindrome (546633646336645).

The spelling of 243321323213303 in words is "two hundred forty-three trillion, three hundred twenty-one billion, three hundred twenty-three million, two hundred thirteen thousand, three hundred three".