317278621140 has 192 divisors, whose sum is σ = 969355537920. Its totient is φ = 77072302080.

The previous prime is 317278621133. The next prime is 317278621169. The reversal of 317278621140 is 41126872713.

It is a junction number, because it is equal to n+sod(n) for n = 317278621092 and 317278621101.

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, 27156100 + ... + 27167780.

It is an arithmetic number, because the mean of its divisors is an integer number (5048726760).

Almost surely, 2^317278621140 is an apocalyptic number.

317278621140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 317278621140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (484677768960).

317278621140 is an abundant number, since it is smaller than the sum of its proper divisors (652076916780).

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

317278621140 is a wasteful number, since it uses less digits than its factorization.

317278621140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12162 (or 12160 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 42.

The spelling of 317278621140 in words is "three hundred seventeen billion, two hundred seventy-eight million, six hundred twenty-one thousand, one hundred forty".