11305813 has 2 divisors, whose sum is σ = 11305814. Its totient is φ = 11305812.

The previous prime is 11305771. The next prime is 11305829. The reversal of 11305813 is 31850311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8803089 + 2502724 = 2967^2 + 1582^2 .

It is an emirp because it is prime and its reverse (31850311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11305813 - 2¹³ = 11297621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11305883) 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, 5652906 + 5652907.

It is an arithmetic number, because the mean of its divisors is an integer number (5652907).

Almost surely, 2^11305813 is an apocalyptic number.

It is an amenable number.

11305813 is a deficient number, since it is larger than the sum of its proper divisors (1).

11305813 is an equidigital number, since it uses as much as digits as its factorization.

11305813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 11305813 is about 3362.4117832294. The cubic root of 11305813 is about 224.4401753283.

The spelling of 11305813 in words is "eleven million, three hundred five thousand, eight hundred thirteen".