321304676 has 48 divisors (see below), whose sum is σ = 702535680. Its totient is φ = 124914720.

The previous prime is 321304667. The next prime is 321304691. The reversal of 321304676 is 676403123.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 202181 + ... + 203763.

It is an arithmetic number, because the mean of its divisors is an integer number (14636160).

Almost surely, 2^321304676 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321304676, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (351267840).

321304676 is an abundant number, since it is smaller than the sum of its proper divisors (381231004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321304676 is a wasteful number, since it uses less digits than its factorization.

321304676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2264 (or 2262 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 321304676 is about 17924.9735285718. The cubic root of 321304676 is about 684.9186867801.

Adding to 321304676 its reverse (676403123), we get a palindrome (997707799).

The spelling of 321304676 in words is "three hundred twenty-one million, three hundred four thousand, six hundred seventy-six".