317845849723 has 2 divisors, whose sum is σ = 317845849724. Its totient is φ = 317845849722.

The previous prime is 317845849709. The next prime is 317845849751. The reversal of 317845849723 is 327948548713.

It is a weak prime.

It is an emirp because it is prime and its reverse (327948548713) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 317845849723 - 2¹³ = 317845841531 is a prime.

It is a super-2 number, since 2×317845849723² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (317845840723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158922924861 + 158922924862.

It is an arithmetic number, because the mean of its divisors is an integer number (158922924862).

Almost surely, 2^317845849723 is an apocalyptic number.

317845849723 is a deficient number, since it is larger than the sum of its proper divisors (1).

317845849723 is an equidigital number, since it uses as much as digits as its factorization.

317845849723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40642560, while the sum is 61.

The spelling of 317845849723 in words is "three hundred seventeen billion, eight hundred forty-five million, eight hundred forty-nine thousand, seven hundred twenty-three".