11310521 has 2 divisors, whose sum is σ = 11310522. Its totient is φ = 11310520.

The previous prime is 11310517. The next prime is 11310553. The reversal of 11310521 is 12501311.

11310521 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10310521 + 1000000 = 3211^2 + 1000^2 .

It is an emirp because it is prime and its reverse (12501311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11310521 - 2² = 11310517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11310496 and 11310505.

It is not a weakly prime, because it can be changed into another prime (11310511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5655260 + 5655261.

It is an arithmetic number, because the mean of its divisors is an integer number (5655261).

Almost surely, 2^11310521 is an apocalyptic number.

It is an amenable number.

11310521 is a deficient number, since it is larger than the sum of its proper divisors (1).

11310521 is an equidigital number, since it uses as much as digits as its factorization.

11310521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 11310521 is about 3363.1118030776. Note that the first 3 decimals coincide. The cubic root of 11310521 is about 224.4713250181.

Adding to 11310521 its reverse (12501311), we get a palindrome (23811832).

The spelling of 11310521 in words is "eleven million, three hundred ten thousand, five hundred twenty-one".