11321 has 2 divisors, whose sum is σ = 11322.
Its totient is φ = 11320.
The previous prime is 11317. The next prime is 11329. The reversal of 11321 is 12311.
Adding to 11321 its reverse (12311), we get a palindrome (23632).
Subtracting 11321 from its reverse (12311), we obtain a triangular number (990 = T44).
11321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is an a-pointer prime, because the next prime (11329) can be obtained adding 11321 to its sum of digits (8).
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 7225 + 4096 = 85^2 + 64^2
It is a cyclic number.
It is not a de Polignac number, because 11321 - 22 = 11317 is a prime.
It is a Sophie Germain prime.
It is a Curzon number.
It is a junction number, because it is equal to n+sod(n) for n = 11299 and 11308.
It is not a weakly prime, because it can be changed into another prime (11329) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5660 + 5661.
It is an arithmetic number, because the mean of its divisors is an integer number (5661).
211321 is an apocalyptic number.
It is an amenable number.
11321 is a deficient number, since it is larger than the sum of its proper divisors (1).
11321 is an equidigital number, since it uses as much as digits as its factorization.
11321 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 6, while the sum is 8.
The square root of 11321 is about 106.4001879698.
The cubic root of 11321 is about 22.4540626540.
The spelling of 11321 in words is "eleven thousand, three hundred twenty-one", and thus it is an iban number.