11313215 has 4 divisors (see below), whose sum is σ = 13575864. Its totient is φ = 9050568.

The previous prime is 11313209. The next prime is 11313271. The reversal of 11313215 is 51231311.

11313215 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, and also an emirpimes, since its reverse is a distinct semiprime: 51231311 = 563 ⋅90997.

It is a cyclic number.

It is not a de Polignac number, because 11313215 - 2¹² = 11309119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11313193 and 11313202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1131317 + ... + 1131326.

It is an arithmetic number, because the mean of its divisors is an integer number (3393966).

Almost surely, 2^11313215 is an apocalyptic number.

11313215 is a deficient number, since it is larger than the sum of its proper divisors (2262649).

11313215 is an equidigital number, since it uses as much as digits as its factorization.

11313215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2262648.

The product of its digits is 90, while the sum is 17.

The square root of 11313215 is about 3363.5123011519. The cubic root of 11313215 is about 224.4891455277.

Adding to 11313215 its reverse (51231311), we get a palindrome (62544526).

The spelling of 11313215 in words is "eleven million, three hundred thirteen thousand, two hundred fifteen".