It is a happy number.
312456 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
2312456 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 312456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (400320).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
312456 is a wasteful number, since it uses less digits than its factorization.
312456 is an evil number, because the sum of its binary digits is even.
The square root of 312456 is about 558.9776381932. The cubic root of 312456 is about 67.8572553487.
Adding to 312456 its reverse (654213), we get a palindrome (966669).
The spelling of 312456 in words is "three hundred twelve thousand, four hundred fifty-six".