12387312 has 60 divisors (see below), whose sum is σ = 39622960. Its totient is φ = 3538944.

The previous prime is 12387293. The next prime is 12387313. The reversal of 12387312 is 21378321.

12387312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12387313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5137 + ... + 7152.

Almost surely, 2^12387312 is an apocalyptic number.

12387312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12387312 is an abundant number, since it is smaller than the sum of its proper divisors (27235648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12387312 is a wasteful number, since it uses less digits than its factorization.

12387312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12310 (or 12301 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 12387312 is about 3519.5613363031. The cubic root of 12387312 is about 231.3799336027.

The spelling of 12387312 in words is "twelve million, three hundred eighty-seven thousand, three hundred twelve".