Adding to 12000312 its reverse (21300021), we get a palindrome (33300333).
It is a happy number.
12000312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a congruent number.
It is an unprimeable number.
Almost surely, 212000312 is an apocalyptic number.
12000312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.
It is an amenable number.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12000312 is an equidigital number, since it uses as much as digits as its factorization.
12000312 is an evil number, because the sum of its binary digits is even.
The square root of 12000312 is about 3464.1466481660. The cubic root of 12000312 is about 228.9448326648.
The spelling of 12000312 in words is "twelve million, three hundred twelve", and thus it is an aban number.