322320321 has 12 divisors (see below), whose sum is σ = 485816448. Its totient is φ = 205537464.

The previous prime is 322320301. The next prime is 322320329. The reversal of 322320321 is 123023223.

It is a happy number.

322320321 is a `hidden beast` number, since 3 + 22 + 320 + 321 = 666.

It is not a de Polignac number, because 322320321 - 2¹¹ = 322318273 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 322320294 and 322320303.

It is not an unprimeable number, because it can be changed into a prime (322320329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 778345 + ... + 778758.

It is an arithmetic number, because the mean of its divisors is an integer number (40484704).

Almost surely, 2^322320321 is an apocalyptic number.

It is an amenable number.

322320321 is a deficient number, since it is larger than the sum of its proper divisors (163496127).

322320321 is a wasteful number, since it uses less digits than its factorization.

322320321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557132 (or 1557129 counting only the distinct ones).

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

The square root of 322320321 is about 17953.2816220322. The cubic root of 322320321 is about 685.6396043481.

Adding to 322320321 its reverse (123023223), we get a palindrome (445343544).

The spelling of 322320321 in words is "three hundred twenty-two million, three hundred twenty thousand, three hundred twenty-one".