11582213 has 4 divisors (see below), whose sum is σ = 11864748. Its totient is φ = 11299680.

The previous prime is 11582209. The next prime is 11582227. The reversal of 11582213 is 31228511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31228511 = 41 ⋅761671.

It can be written as a sum of positive squares in 2 ways, for example, as 1329409 + 10252804 = 1153^2 + 3202^2 .

It is a cyclic number.

It is not a de Polignac number, because 11582213 - 2² = 11582209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11582203) 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 in 3 ways as a sum of consecutive naturals, for example, 141206 + ... + 141287.

It is an arithmetic number, because the mean of its divisors is an integer number (2966187).

Almost surely, 2^11582213 is an apocalyptic number.

It is an amenable number.

11582213 is a deficient number, since it is larger than the sum of its proper divisors (282535).

11582213 is an equidigital number, since it uses as much as digits as its factorization.

11582213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282534.

The product of its digits is 480, while the sum is 23.

The square root of 11582213 is about 3403.2650499190. The cubic root of 11582213 is about 226.2544774914.

It can be divided in two parts, 115 and 82213, that added together give a palindrome (82328).

The spelling of 11582213 in words is "eleven million, five hundred eighty-two thousand, two hundred thirteen".