It is a happy number.
It is a zygodrome in base 15.
It is a congruent number.
It is an unprimeable number.
Almost surely, 212312000 is an apocalyptic number.
12312000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 12312000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23972520).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12312000 is an equidigital number, since it uses as much as digits as its factorization.
12312000 is an evil number, because the sum of its binary digits is even.
The square root of 12312000 is about 3508.8459641312. The cubic root of 12312000 is about 230.9100678766.
Adding to 12312000 its reverse (21321), we get a palindrome (12333321).
The spelling of 12312000 in words is "twelve million, three hundred twelve thousand".