10817321 has 4 divisors (see below), whose sum is σ = 11453652. Its totient is φ = 10180992.

The previous prime is 10817311. The next prime is 10817329. The reversal of 10817321 is 12371801.

It is a happy number.

10817321 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6817321 + 4000000 = 2611^2 + 2000^2 .

It is a cyclic number.

It is not a de Polignac number, because 10817321 - 2¹⁰ = 10816297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10817329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 318140 + ... + 318173.

It is an arithmetic number, because the mean of its divisors is an integer number (2863413).

Almost surely, 2^10817321 is an apocalyptic number.

It is an amenable number.

10817321 is a deficient number, since it is larger than the sum of its proper divisors (636331).

10817321 is an equidigital number, since it uses as much as digits as its factorization.

10817321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636330.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 10817321 is about 3288.9695954812. The cubic root of 10817321 is about 221.1599955233.

The spelling of 10817321 in words is "ten million, eight hundred seventeen thousand, three hundred twenty-one".