320123404321023 has 4 divisors (see below), whose sum is σ = 426831205761368. Its totient is φ = 213415602880680.

The previous prime is 320123404321009. The next prime is 320123404321043.

It is a happy number.

320123404321023 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 320123404321023 - 2⁸ = 320123404320767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320123404321043) 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 in 3 ways as a sum of consecutive naturals, for example, 53353900720168 + ... + 53353900720173.

It is an arithmetic number, because the mean of its divisors is an integer number (106707801440342).

Almost surely, 2^{320123404321023} is an apocalyptic number.

320123404321023 is a deficient number, since it is larger than the sum of its proper divisors (106707801440345).

320123404321023 is a wasteful number, since it uses less digits than its factorization.

320123404321023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106707801440344.

The product of its (nonzero) digits is 20736, while the sum is 30.

It can be divided in two parts, 32012340 and 4321023, that added together give a palindrome (36333363).

The spelling of 320123404321023 in words is "three hundred twenty trillion, one hundred twenty-three billion, four hundred four million, three hundred twenty-one thousand, twenty-three".