10816321 has 8 divisors (see below), whose sum is σ = 11163944. Its totient is φ = 10471680.

The previous prime is 10816319. The next prime is 10816327. The reversal of 10816321 is 12361801.

It can be written as a sum of positive squares in 4 ways, for example, as 2143296 + 8673025 = 1464^2 + 2945^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10816321 - 2¹ = 10816319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10816292 and 10816301.

It is not an unprimeable number, because it can be changed into a prime (10816327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8311 + ... + 9523.

It is an arithmetic number, because the mean of its divisors is an integer number (1395493).

Almost surely, 2^10816321 is an apocalyptic number.

It is an amenable number.

10816321 is a deficient number, since it is larger than the sum of its proper divisors (347623).

10816321 is a wasteful number, since it uses less digits than its factorization.

10816321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1491.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 10816321 is about 3288.8175686711. The cubic root of 10816321 is about 221.1531803173.

The spelling of 10816321 in words is "ten million, eight hundred sixteen thousand, three hundred twenty-one".