317499591203420 has 192 divisors, whose sum is σ = 716274483724800. Its totient is φ = 117865253744640.

The previous prime is 317499591203419. The next prime is 317499591203447. The reversal of 317499591203420 is 24302195994713.

It is a self number, because there is not a number n which added to its sum of digits gives 317499591203420.

It is a congruent 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, 4255361915 + ... + 4255436525.

It is an arithmetic number, because the mean of its divisors is an integer number (3730596269400).

Almost surely, 2^{317499591203420} 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 317499591203420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (358137241862400).

317499591203420 is an abundant number, since it is smaller than the sum of its proper divisors (398774892521380).

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

317499591203420 is a wasteful number, since it uses less digits than its factorization.

317499591203420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75748 (or 75746 counting only the distinct ones).

The product of its (nonzero) digits is 14696640, while the sum is 59.

The spelling of 317499591203420 in words is "three hundred seventeen trillion, four hundred ninety-nine billion, five hundred ninety-one million, two hundred three thousand, four hundred twenty".