12315313 has 4 divisors (see below), whose sum is σ = 12322548. Its totient is φ = 12308080.

The previous prime is 12315301. The next prime is 12315323. The reversal of 12315313 is 31351321.

12315313 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, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 9193024 + 3122289 = 3032^2 + 1767^2 .

It is a cyclic number.

It is not a de Polignac number, because 12315313 - 2¹⁷ = 12184241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12315323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 495 + ... + 4987.

It is an arithmetic number, because the mean of its divisors is an integer number (3080637).

Almost surely, 2^12315313 is an apocalyptic number.

It is an amenable number.

12315313 is a deficient number, since it is larger than the sum of its proper divisors (7235).

12315313 is an equidigital number, since it uses as much as digits as its factorization.

12315313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7234.

The product of its digits is 270, while the sum is 19.

The square root of 12315313 is about 3509.3180249160. The cubic root of 12315313 is about 230.9307776570.

Adding to 12315313 its reverse (31351321), we get a palindrome (43666634).

The spelling of 12315313 in words is "twelve million, three hundred fifteen thousand, three hundred thirteen".