317280 has 48 divisors (see below), whose sum is σ = 1000944. Its totient is φ = 84480.
The previous prime is 317279. The next prime is 317321. The reversal of 317280 is 82713.
It is a tau number, because it is divible by the number of its divisors (48).
It is an Ulam number.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150 + ... + 810.
It is an arithmetic number, because the mean of its divisors is an integer number (20853).
2317280 is an apocalyptic number.
317280 is a gapful number since it is divisible by the number (30) 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 317280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (500472).
317280 is an abundant number, since it is smaller than the sum of its proper divisors (683664).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
317280 is a wasteful number, since it uses less digits than its factorization.
317280 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 679 (or 671 counting only the distinct ones).
The product of its (nonzero) digits is 336, while the sum is 21.
The square root of 317280 is about 563.2761312181. The cubic root of 317280 is about 68.2046888931.
Adding to 317280 its reverse (82713), we get a palindrome (399993).
The spelling of 317280 in words is "three hundred seventeen thousand, two hundred eighty".
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