320003423 has 4 divisors (see below), whose sum is σ = 320067600. Its totient is φ = 319939248.

The previous prime is 320003407. The next prime is 320003441. The reversal of 320003423 is 324300023.

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 320003423 - 2⁴ = 320003407 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 (320003443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23915 + ... + 34812.

It is an arithmetic number, because the mean of its divisors is an integer number (80016900).

Almost surely, 2^320003423 is an apocalyptic number.

320003423 is a deficient number, since it is larger than the sum of its proper divisors (64177).

320003423 is an equidigital number, since it uses as much as digits as its factorization.

320003423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64176.

The product of its (nonzero) digits is 432, while the sum is 17.

The square root of 320003423 is about 17888.6394955010. The cubic root of 320003423 is about 683.9928175152.

Adding to 320003423 its reverse (324300023), we get a palindrome (644303446).

The spelling of 320003423 in words is "three hundred twenty million, three thousand, four hundred twenty-three".