11365181 has 2 divisors, whose sum is σ = 11365182. Its totient is φ = 11365180.

The previous prime is 11365157. The next prime is 11365213. The reversal of 11365181 is 18156311.

11365181 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., 11356900 + 8281 = 3370^2 + 91^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11365181 is a prime.

It is a super-2 number, since 2×11365181² = 258334678325522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11365181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11365481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5682590 + 5682591.

It is an arithmetic number, because the mean of its divisors is an integer number (5682591).

Almost surely, 2^11365181 is an apocalyptic number.

It is an amenable number.

11365181 is a deficient number, since it is larger than the sum of its proper divisors (1).

11365181 is an equidigital number, since it uses as much as digits as its factorization.

11365181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 26.

The square root of 11365181 is about 3371.2284111285. The cubic root of 11365181 is about 224.8323425918.

The spelling of 11365181 in words is "eleven million, three hundred sixty-five thousand, one hundred eighty-one".