317261352047440 has 20 divisors (see below), whose sum is σ = 737632643510484. Its totient is φ = 126904540818944.

The previous prime is 317261352047407. The next prime is 317261352047441. The reversal of 317261352047440 is 44740253162713.

It can be written as a sum of positive squares in 2 ways, for example, as 171356791870224 + 145904560177216 = 13090332^2 + 12079096^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×317261352047440² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317261352047441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1982883450217 + ... + 1982883450376.

Almost surely, 2^{317261352047440} is an apocalyptic number.

It is an amenable number.

317261352047440 is an abundant number, since it is smaller than the sum of its proper divisors (420371291463044).

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

317261352047440 is a wasteful number, since it uses less digits than its factorization.

317261352047440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3965766900606 (or 3965766900600 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 49.

The spelling of 317261352047440 in words is "three hundred seventeen trillion, two hundred sixty-one billion, three hundred fifty-two million, forty-seven thousand, four hundred forty".