12313215 has 20 divisors (see below), whose sum is σ = 22073304. Its totient is φ = 6566832.

The previous prime is 12313187. The next prime is 12313229. The reversal of 12313215 is 51231321.

It is not a de Polignac number, because 12313215 - 2⁸ = 12312959 is a prime.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 14797 + ... + 15606.

Almost surely, 2^12313215 is an apocalyptic number.

12313215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12313215 is a deficient number, since it is larger than the sum of its proper divisors (9760089).

12313215 is an equidigital number, since it uses as much as digits as its factorization.

12313215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30420 (or 30411 counting only the distinct ones).

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

The square root of 12313215 is about 3509.0190937070. The cubic root of 12313215 is about 230.9176633527.

Adding to 12313215 its reverse (51231321), we get a palindrome (63544536).

The spelling of 12313215 in words is "twelve million, three hundred thirteen thousand, two hundred fifteen".