11305985 has 4 divisors (see below), whose sum is σ = 13567188. Its totient is φ = 9044784.

The previous prime is 11305981. The next prime is 11305999. The reversal of 11305985 is 58950311.

11305985 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4566769 + 6739216 = 2137^2 + 2596^2 .

It is a cyclic number.

It is not a de Polignac number, because 11305985 - 2² = 11305981 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11305981) 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 in 3 ways as a sum of consecutive naturals, for example, 1130594 + ... + 1130603.

It is an arithmetic number, because the mean of its divisors is an integer number (3391797).

Almost surely, 2^11305985 is an apocalyptic number.

It is an amenable number.

11305985 is a deficient number, since it is larger than the sum of its proper divisors (2261203).

11305985 is an equidigital number, since it uses as much as digits as its factorization.

11305985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2261202.

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 11305985 is about 3362.4373600113. The cubic root of 11305985 is about 224.4413134895.

The spelling of 11305985 in words is "eleven million, three hundred five thousand, nine hundred eighty-five".