320321323 has 8 divisors (see below), whose sum is σ = 385349120. Its totient is φ = 260110440.

The previous prime is 320321317. The next prime is 320321333. The reversal of 320321323 is 323123023.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 320321323 - 2⁹ = 320320811 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

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 320321323.

It is not an unprimeable number, because it can be changed into a prime (320321303) 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 7 ways as a sum of consecutive naturals, for example, 1204083 + ... + 1204348.

It is an arithmetic number, because the mean of its divisors is an integer number (48168640).

Almost surely, 2^320321323 is an apocalyptic number.

320321323 is a deficient number, since it is larger than the sum of its proper divisors (65027797).

320321323 is a wasteful number, since it uses less digits than its factorization.

320321323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2408457.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 320321323 is about 17897.5228174181. The cubic root of 320321323 is about 684.2192415019.

Adding to 320321323 its reverse (323123023), we get a palindrome (643444346).

The spelling of 320321323 in words is "three hundred twenty million, three hundred twenty-one thousand, three hundred twenty-three".