317393980 has 48 divisors (see below), whose sum is σ = 700892640. Its totient is φ = 120556800.

The previous prime is 317393977. The next prime is 317393983. The reversal of 317393980 is 89393713.

It is an interprime number because it is at equal distance from previous prime (317393977) and next prime (317393983).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317393983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30895 + ... + 39865.

It is an arithmetic number, because the mean of its divisors is an integer number (14601930).

Almost surely, 2^317393980 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 317393980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (350446320).

317393980 is an abundant number, since it is smaller than the sum of its proper divisors (383498660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

317393980 is a wasteful number, since it uses less digits than its factorization.

317393980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9070 (or 9068 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 317393980 is about 17815.5544398708. The cubic root of 317393980 is about 682.1285522329.

The spelling of 317393980 in words is "three hundred seventeen million, three hundred ninety-three thousand, nine hundred eighty".