320020331321023 has 2 divisors, whose sum is σ = 320020331321024. Its totient is φ = 320020331321022.

The previous prime is 320020331321003. The next prime is 320020331321063. The reversal of 320020331321023 is 320123133020023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320020331321023 - 2²⁵ = 320020297766591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320020331321003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160010165660511 + 160010165660512.

It is an arithmetic number, because the mean of its divisors is an integer number (160010165660512).

Almost surely, 2^{320020331321023} is an apocalyptic number.

320020331321023 is a deficient number, since it is larger than the sum of its proper divisors (1).

320020331321023 is an equidigital number, since it uses as much as digits as its factorization.

320020331321023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 320020331321023 its reverse (320123133020023), we get a palindrome (640143464341046).

The spelling of 320020331321023 in words is "three hundred twenty trillion, twenty billion, three hundred thirty-one million, three hundred twenty-one thousand, twenty-three".