810328321 has 16 divisors (see below), whose sum is σ = 933946560. Its totient is φ = 695321280.

The previous prime is 810328319. The next prime is 810328327. The reversal of 810328321 is 123823018.

It is a cyclic number.

It is not a de Polignac number, because 810328321 - 2¹ = 810328319 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 810328321.

It is not an unprimeable number, because it can be changed into a prime (810328327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50895 + ... + 64891.

It is an arithmetic number, because the mean of its divisors is an integer number (58371660).

Almost surely, 2^810328321 is an apocalyptic number.

It is an amenable number.

810328321 is a deficient number, since it is larger than the sum of its proper divisors (123618239).

810328321 is a wasteful number, since it uses less digits than its factorization.

810328321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14304.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 810328321 is about 28466.2663691605. The cubic root of 810328321 is about 932.2956816476.

The spelling of 810328321 in words is "eight hundred ten million, three hundred twenty-eight thousand, three hundred twenty-one".