320423343324823 has 2 divisors, whose sum is σ = 320423343324824. Its totient is φ = 320423343324822.

The previous prime is 320423343324817. The next prime is 320423343324881. The reversal of 320423343324823 is 328423343324023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320423343324823 - 2²⁵ = 320423309770391 is a prime.

It is a super-2 number, since 2×320423343324823² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320423343324023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160211671662411 + 160211671662412.

It is an arithmetic number, because the mean of its divisors is an integer number (160211671662412).

Almost surely, 2^{320423343324823} is an apocalyptic number.

320423343324823 is a deficient number, since it is larger than the sum of its proper divisors (1).

320423343324823 is an equidigital number, since it uses as much as digits as its factorization.

320423343324823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5971968, while the sum is 46.

Adding to 320423343324823 its reverse (328423343324023), we get a palindrome (648846686648846).

The spelling of 320423343324823 in words is "three hundred twenty trillion, four hundred twenty-three billion, three hundred forty-three million, three hundred twenty-four thousand, eight hundred twenty-three".