11365 has 4 divisors (see below), whose sum is σ = 13644. Its totient is φ = 9088.

The previous prime is 11353. The next prime is 11369. The reversal of 11365 is 56311.

11365 is digitally balanced in base 2, 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 7396 + 3969 = 86^2 + 63^2 .

It is a cyclic number.

It is not a de Polignac number, because 11365 - 2⁹ = 10853 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11369) 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, 1132 + ... + 1141.

It is an arithmetic number, because the mean of its divisors is an integer number (3411).

2¹¹³⁶⁵ is an apocalyptic number.

It is an amenable number.

11365 is a deficient number, since it is larger than the sum of its proper divisors (2279).

11365 is an equidigital number, since it uses as much as digits as its factorization.

11365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2278.

The product of its digits is 90, while the sum is 16.

The square root of 11365 is about 106.6067540074. The cubic root of 11365 is about 22.4831149038.

Adding to 11365 its reverse (56311), we get a palindrome (67676).

The spelling of 11365 in words is "eleven thousand, three hundred sixty-five".