12331215 has 48 divisors (see below), whose sum is σ = 23351328. Its totient is φ = 5983488.

The previous prime is 12331213. The next prime is 12331219. The reversal of 12331215 is 51213321.

12331215 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12331215 - 2¹ = 12331213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12331213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 62497 + ... + 62693.

It is an arithmetic number, because the mean of its divisors is an integer number (486486).

Almost surely, 2^12331215 is an apocalyptic number.

12331215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12331215 is a deficient number, since it is larger than the sum of its proper divisors (11020113).

12331215 is a wasteful number, since it uses less digits than its factorization.

12331215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328 (or 325 counting only the distinct ones).

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

The square root of 12331215 is about 3511.5829763797. The cubic root of 12331215 is about 231.0301304376.

Adding to 12331215 its reverse (51213321), we get a palindrome (63544536).

The spelling of 12331215 in words is "twelve million, three hundred thirty-one thousand, two hundred fifteen".