317303490 has 128 divisors (see below), whose sum is σ = 905200128. Its totient is φ = 69672960.

The previous prime is 317303489. The next prime is 317303509. The reversal of 317303490 is 94303713.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 753480 + ... + 753900.

It is an arithmetic number, because the mean of its divisors is an integer number (7071876).

Almost surely, 2^317303490 is an apocalyptic number.

317303490 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 317303490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (452600064).

317303490 is an abundant number, since it is smaller than the sum of its proper divisors (587896638).

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

317303490 is a wasteful number, since it uses less digits than its factorization.

317303490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572.

The product of its (nonzero) digits is 6804, while the sum is 30.

The square root of 317303490 is about 17813.0146241449. The cubic root of 317303490 is about 682.0637204218.

The spelling of 317303490 in words is "three hundred seventeen million, three hundred three thousand, four hundred ninety".