11313521 has 2 divisors, whose sum is σ = 11313522. Its totient is φ = 11313520.

The previous prime is 11313473. The next prime is 11313557. The reversal of 11313521 is 12531311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6630625 + 4682896 = 2575^2 + 2164^2 .

It is a cyclic number.

It is not a de Polignac number, because 11313521 - 2⁶ = 11313457 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11313521.

It is not a weakly prime, because it can be changed into another prime (11313571) 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 as a sum of consecutive naturals, namely, 5656760 + 5656761.

It is an arithmetic number, because the mean of its divisors is an integer number (5656761).

Almost surely, 2^11313521 is an apocalyptic number.

It is an amenable number.

11313521 is a deficient number, since it is larger than the sum of its proper divisors (1).

11313521 is an equidigital number, since it uses as much as digits as its factorization.

11313521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90, while the sum is 17.

The square root of 11313521 is about 3363.5577890085. The cubic root of 11313521 is about 224.4911695047.

Adding to 11313521 its reverse (12531311), we get a palindrome (23844832).

The spelling of 11313521 in words is "eleven million, three hundred thirteen thousand, five hundred twenty-one".