321023204044243 has 2 divisors, whose sum is σ = 321023204044244. Its totient is φ = 321023204044242.

The previous prime is 321023204044241. The next prime is 321023204044247. The reversal of 321023204044243 is 342440402320123.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 321023204044243 - 2¹ = 321023204044241 is a prime.

It is a super-2 number, since 2×321023204044243² (a number of 30 digits) contains 22 as substring.

Together with 321023204044241, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 321023204044199 and 321023204044208.

It is not a weakly prime, because it can be changed into another prime (321023204044241) 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, 160511602022121 + 160511602022122.

It is an arithmetic number, because the mean of its divisors is an integer number (160511602022122).

Almost surely, 2^{321023204044243} is an apocalyptic number.

321023204044243 is a deficient number, since it is larger than the sum of its proper divisors (1).

321023204044243 is an equidigital number, since it uses as much as digits as its factorization.

321023204044243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 110592, while the sum is 34.

Adding to 321023204044243 its reverse (342440402320123), we get a palindrome (663463606364366).

The spelling of 321023204044243 in words is "three hundred twenty-one trillion, twenty-three billion, two hundred four million, forty-four thousand, two hundred forty-three".