317080561 has 4 divisors (see below), whose sum is σ = 362377792. Its totient is φ = 271783332.

The previous prime is 317080559. The next prime is 317080579. The reversal of 317080561 is 165080713.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 165080713 = 7 ⋅23582959.

It is a cyclic number.

It is not a de Polignac number, because 317080561 - 2¹ = 317080559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (317080261) 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, 22648605 + ... + 22648618.

It is an arithmetic number, because the mean of its divisors is an integer number (90594448).

Almost surely, 2^317080561 is an apocalyptic number.

It is an amenable number.

317080561 is a deficient number, since it is larger than the sum of its proper divisors (45297231).

317080561 is an equidigital number, since it uses as much as digits as its factorization.

317080561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45297230.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 317080561 is about 17806.7560493202. The cubic root of 317080561 is about 681.9039497175.

The spelling of 317080561 in words is "three hundred seventeen million, eighty thousand, five hundred sixty-one".