317801661409 has 8 divisors (see below), whose sum is σ = 336548594088. Its totient is φ = 299060586240.

The previous prime is 317801661377. The next prime is 317801661431. The reversal of 317801661409 is 904166108713.

It can be written as a sum of positive squares in 4 ways, for example, as 7026630625 + 310775030784 = 83825^2 + 557472^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 317801661409 - 2⁵ = 317801661377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (317801631409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1352422 + ... + 1569919.

It is an arithmetic number, because the mean of its divisors is an integer number (42068574261).

Almost surely, 2^317801661409 is an apocalyptic number.

It is an amenable number.

317801661409 is a deficient number, since it is larger than the sum of its proper divisors (18746932679).

317801661409 is a wasteful number, since it uses less digits than its factorization.

317801661409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2928755.

The product of its (nonzero) digits is 217728, while the sum is 46.

The spelling of 317801661409 in words is "three hundred seventeen billion, eight hundred one million, six hundred sixty-one thousand, four hundred nine".