320312323 has 4 divisors (see below), whose sum is σ = 321687288. Its totient is φ = 318937360.

The previous prime is 320312299. The next prime is 320312353. The reversal of 320312323 is 323213023.

It is a happy number.

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 320312323 - 2⁹ = 320311811 is a prime.

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 320312323.

It is not an unprimeable number, because it can be changed into a prime (320312353) 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, 687133 + ... + 687598.

It is an arithmetic number, because the mean of its divisors is an integer number (80421822).

Almost surely, 2^320312323 is an apocalyptic number.

320312323 is a deficient number, since it is larger than the sum of its proper divisors (1374965).

320312323 is a wasteful number, since it uses less digits than its factorization.

320312323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374964.

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

The square root of 320312323 is about 17897.2713842083. The cubic root of 320312323 is about 684.2128333211.

Adding to 320312323 its reverse (323213023), we get a palindrome (643525346).

The spelling of 320312323 in words is "three hundred twenty million, three hundred twelve thousand, three hundred twenty-three".