It is a tau number, because it is divible by the number of its divisors (20).
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 315440.
2315440 is an apocalyptic number.
It is an amenable number.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
315440 is a wasteful number, since it uses less digits than its factorization.
315440 is an evil number, because the sum of its binary digits is even.
The square root of 315440 is about 561.6404543834. The cubic root of 315440 is about 68.0725868492.
Adding to 315440 its reverse (44513), we get a palindrome (359953).
The spelling of 315440 in words is "three hundred fifteen thousand, four hundred forty".