317343261056540 has 96 divisors (see below), whose sum is σ = 697380372771264. Its totient is φ = 121170287646720.

The previous prime is 317343261056531. The next prime is 317343261056597. The reversal of 317343261056540 is 45650162343713.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 841747280 + ... + 842124200.

It is an arithmetic number, because the mean of its divisors is an integer number (7264378883034).

Almost surely, 2^{317343261056540} 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 317343261056540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (348690186385632).

317343261056540 is an abundant number, since it is smaller than the sum of its proper divisors (380037111714724).

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

317343261056540 is a wasteful number, since it uses less digits than its factorization.

317343261056540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398487 (or 398485 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 50.

The spelling of 317343261056540 in words is "three hundred seventeen trillion, three hundred forty-three billion, two hundred sixty-one million, fifty-six thousand, five hundred forty".