320823 has 12 divisors (see below), whose sum is σ = 474760. Its totient is φ = 208656.

The previous prime is 320821. The next prime is 320833. The reversal of 320823 is 328023.

It is not a de Polignac number, because 320823 - 2¹ = 320821 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320796 and 320805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28 + ... + 801.

2³²⁰⁸²³ is an apocalyptic number.

320823 is a deficient number, since it is larger than the sum of its proper divisors (153937).

320823 is a wasteful number, since it uses less digits than its factorization.

320823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878 (or 875 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 320823 is about 566.4123939322. The cubic root of 320823 is about 68.4576255941.

Adding to 320823 its reverse (328023), we get a palindrome (648846).

The spelling of 320823 in words is "three hundred twenty thousand, eight hundred twenty-three".