320505023 has 4 divisors (see below), whose sum is σ = 334440048. Its totient is φ = 306570000.

The previous prime is 320505007. The next prime is 320505047.

320505023 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 320505023 - 2⁴ = 320505007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320504986 and 320505004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320505083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6967478 + ... + 6967523.

It is an arithmetic number, because the mean of its divisors is an integer number (83610012).

Almost surely, 2^320505023 is an apocalyptic number.

320505023 is a deficient number, since it is larger than the sum of its proper divisors (13935025).

320505023 is a wasteful number, since it uses less digits than its factorization.

320505023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13935024.

The product of its (nonzero) digits is 900, while the sum is 20.

The square root of 320505023 is about 17902.6540769798. The cubic root of 320505023 is about 684.3500133716.

It can be divided in two parts, 32050 and 5023, that added together give a palindrome (37073).

The spelling of 320505023 in words is "three hundred twenty million, five hundred five thousand, twenty-three".