317137145856 has 104 divisors (see below), whose sum is σ = 863588793984. Its totient is φ = 103462993920.

The previous prime is 317137145837. The next prime is 317137145933. The reversal of 317137145856 is 658541731713.

It is a junction number, because it is equal to n+sod(n) for n = 317137145799 and 317137145808.

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, 302976 + ... + 852096.

Almost surely, 2^317137145856 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 317137145856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (431794396992).

317137145856 is an abundant number, since it is smaller than the sum of its proper divisors (546451648128).

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

317137145856 is an equidigital number, since it uses as much as digits as its factorization.

317137145856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549195 (or 549173 counting only the distinct ones).

The product of its digits is 2116800, while the sum is 51.

The spelling of 317137145856 in words is "three hundred seventeen billion, one hundred thirty-seven million, one hundred forty-five thousand, eight hundred fifty-six".