317998420 has 24 divisors (see below), whose sum is σ = 668611944. Its totient is φ = 127044096.

The previous prime is 317998411. The next prime is 317998441. The reversal of 317998420 is 24899713.

It can be written as a sum of positive squares in 4 ways, for example, as 30492484 + 287505936 = 5522^2 + 16956^2 .

It is a super-2 number, since 2×317998420² = 202245990244992800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7864 + ... + 26416.

It is an arithmetic number, because the mean of its divisors is an integer number (27858831).

Almost surely, 2^317998420 is an apocalyptic number.

It is an amenable number.

317998420 is an abundant number, since it is smaller than the sum of its proper divisors (350613524).

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

317998420 is a wasteful number, since it uses less digits than its factorization.

317998420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19419 (or 19417 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 317998420 is about 17832.5101990718. The cubic root of 317998420 is about 682.5612892045.

The spelling of 317998420 in words is "three hundred seventeen million, nine hundred ninety-eight thousand, four hundred twenty".