13321317 has 4 divisors (see below), whose sum is σ = 17761760. Its totient is φ = 8880876.

The previous prime is 13321313. The next prime is 13321327. The reversal of 13321317 is 71312331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 13321317 - 2² = 13321313 is a prime.

It is a super-2 number, since 2×13321317² = 354914973228978, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13321293 and 13321302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13321313) 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, 2220217 + ... + 2220222.

It is an arithmetic number, because the mean of its divisors is an integer number (4440440).

Almost surely, 2^13321317 is an apocalyptic number.

It is an amenable number.

13321317 is a deficient number, since it is larger than the sum of its proper divisors (4440443).

13321317 is an equidigital number, since it uses as much as digits as its factorization.

13321317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4440442.

The product of its digits is 378, while the sum is 21.

The square root of 13321317 is about 3649.8379416078. The cubic root of 13321317 is about 237.0549641965.

Adding to 13321317 its reverse (71312331), we get a palindrome (84633648).

The spelling of 13321317 in words is "thirteen million, three hundred twenty-one thousand, three hundred seventeen".