12215313 has 24 divisors (see below), whose sum is σ = 19896800. Its totient is φ = 7401240.

The previous prime is 12215297. The next prime is 12215317. The reversal of 12215313 is 31351221.

It is not a de Polignac number, because 12215313 - 2⁴ = 12215297 is a prime.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (12215317) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1398 + ... + 5136.

Almost surely, 2^12215313 is an apocalyptic number.

It is an amenable number.

12215313 is a deficient number, since it is larger than the sum of its proper divisors (7681487).

12215313 is a wasteful number, since it uses less digits than its factorization.

12215313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3770 (or 3753 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 12215313 is about 3495.0412014739. The cubic root of 12215313 is about 230.3040276827.

Adding to 12215313 its reverse (31351221), we get a palindrome (43566534).

The spelling of 12215313 in words is "twelve million, two hundred fifteen thousand, three hundred thirteen".