12903312 has 20 divisors (see below), whose sum is σ = 33333680. Its totient is φ = 4301088.

The previous prime is 12903287. The next prime is 12903313. The reversal of 12903312 is 21330921.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12903313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134362 + ... + 134457.

It is an arithmetic number, because the mean of its divisors is an integer number (1666684).

Almost surely, 2^12903312 is an apocalyptic number.

12903312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12903312 is an abundant number, since it is smaller than the sum of its proper divisors (20430368).

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

12903312 is a wasteful number, since it uses less digits than its factorization.

12903312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268830 (or 268824 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 12903312 is about 3592.1180381496. The cubic root of 12903312 is about 234.5490794901.

The spelling of 12903312 in words is "twelve million, nine hundred three thousand, three hundred twelve".