320404323 has 4 divisors (see below), whose sum is σ = 427205768. Its totient is φ = 213602880.

The previous prime is 320404307. The next prime is 320404351. The reversal of 320404323 is 323404023.

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

It is not a de Polignac number, because 320404323 - 2⁴ = 320404307 is a prime.

It is a super-3 number, since 3×320404323³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 320404323.

It is not an unprimeable number, because it can be changed into a prime (320404523) 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, 53400718 + ... + 53400723.

It is an arithmetic number, because the mean of its divisors is an integer number (106801442).

Almost surely, 2^320404323 is an apocalyptic number.

320404323 is a deficient number, since it is larger than the sum of its proper divisors (106801445).

320404323 is a wasteful number, since it uses less digits than its factorization.

320404323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106801444.

The product of its (nonzero) digits is 1728, while the sum is 21.

The square root of 320404323 is about 17899.8414238786. The cubic root of 320404323 is about 684.2783335121.

Adding to 320404323 its reverse (323404023), we get a palindrome (643808346).

It can be divided in two parts, 32040 and 4323, that added together give a palindrome (36363).

The spelling of 320404323 in words is "three hundred twenty million, four hundred four thousand, three hundred twenty-three".