320431323 has 8 divisors (see below), whose sum is σ = 427387968. Its totient is φ = 213547784.

The previous prime is 320431297. The next prime is 320431327. The reversal of 320431323 is 323134023.

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 320431323 - 2⁶ = 320431259 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 320431323.

It is not an unprimeable number, because it can be changed into a prime (320431327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7065 + ... + 26282.

It is an arithmetic number, because the mean of its divisors is an integer number (53423496).

Almost surely, 2^320431323 is an apocalyptic number.

320431323 is a deficient number, since it is larger than the sum of its proper divisors (106956645).

320431323 is a wasteful number, since it uses less digits than its factorization.

320431323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36553.

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 320431323 is about 17900.5956046161. The cubic root of 320431323 is about 684.2975540144.

Adding to 320431323 its reverse (323134023), we get a palindrome (643565346).

The spelling of 320431323 in words is "three hundred twenty million, four hundred thirty-one thousand, three hundred twenty-three".