Adding to 312500 its reverse (5213), we get a palindrome (317713).
It is a nialpdrome in base 5.
It is a congruent number.
312500 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
312500 is a Friedman number, since it can be written as 100*(3+2)^5, using all its digits and the basic arithmetic operations.
2312500 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 312500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (341796).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
312500 is an frugal number, since it uses more digits than its factorization.
312500 is an evil number, because the sum of its binary digits is even.
The square root of 312500 is about 559.0169943749. The cubic root of 312500 is about 67.8604404149.
The spelling of 312500 in words is "three hundred twelve thousand, five hundred".