320223321 has 32 divisors (see below), whose sum is σ = 544780800. Its totient is φ = 183857040.

The previous prime is 320223289. The next prime is 320223331. The reversal of 320223321 is 123322023.

It is a happy number.

320223321 is a `hidden beast` number, since 320 + 2 + 23 + 321 = 666.

It is not a de Polignac number, because 320223321 - 2⁵ = 320223289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320223294 and 320223303.

It is not an unprimeable number, because it can be changed into a prime (320223331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22731 + ... + 34016.

It is an arithmetic number, because the mean of its divisors is an integer number (17024400).

Almost surely, 2^320223321 is an apocalyptic number.

It is an amenable number.

320223321 is a deficient number, since it is larger than the sum of its proper divisors (224557479).

320223321 is a wasteful number, since it uses less digits than its factorization.

320223321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56786 (or 56780 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 320223321 is about 17894.7847430473. The cubic root of 320223321 is about 684.1494556453.

Adding to 320223321 its reverse (123322023), we get a palindrome (443545344).

The spelling of 320223321 in words is "three hundred twenty million, two hundred twenty-three thousand, three hundred twenty-one".