320230321 has 4 divisors (see below), whose sum is σ = 320352100. Its totient is φ = 320108544.

The previous prime is 320230303. The next prime is 320230327. The reversal of 320230321 is 123032023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123032023 = 11071 ⋅11113.

It can be written as a sum of positive squares in 2 ways, for example, as 183223296 + 137007025 = 13536^2 + 11705^2 .

It is a cyclic number.

It is not a de Polignac number, because 320230321 - 2¹¹ = 320228273 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320230295 and 320230304.

It is not an unprimeable number, because it can be changed into a prime (320230327) 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, 56856 + ... + 62233.

It is an arithmetic number, because the mean of its divisors is an integer number (80088025).

Almost surely, 2^320230321 is an apocalyptic number.

It is an amenable number.

320230321 is a deficient number, since it is larger than the sum of its proper divisors (121779).

320230321 is a wasteful number, since it uses less digits than its factorization.

320230321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121778.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 320230321 is about 17894.9803296902. The cubic root of 320230321 is about 684.1544407198.

Adding to 320230321 its reverse (123032023), we get a palindrome (443262344).

The spelling of 320230321 in words is "three hundred twenty million, two hundred thirty thousand, three hundred twenty-one".