12315213 has 8 divisors (see below), whose sum is σ = 18244800. Its totient is φ = 8210124.

The previous prime is 12315209. The next prime is 12315223. The reversal of 12315213 is 31251321.

It is not a de Polignac number, because 12315213 - 2² = 12315209 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12315223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228033 + ... + 228086.

It is an arithmetic number, because the mean of its divisors is an integer number (2280600).

Almost surely, 2^12315213 is an apocalyptic number.

It is an amenable number.

12315213 is a deficient number, since it is larger than the sum of its proper divisors (5929587).

12315213 is an equidigital number, since it uses as much as digits as its factorization.

12315213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456128 (or 456122 counting only the distinct ones).

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

The square root of 12315213 is about 3509.3037771045. The cubic root of 12315213 is about 230.9301526048.

Adding to 12315213 its reverse (31251321), we get a palindrome (43566534).

The spelling of 12315213 in words is "twelve million, three hundred fifteen thousand, two hundred thirteen".