317471031209 has 2 divisors, whose sum is σ = 317471031210. Its totient is φ = 317471031208.

The previous prime is 317471031193. The next prime is 317471031223. The reversal of 317471031209 is 902130174713.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 251702890000 + 65768141209 = 501700^2 + 256453^2 .

It is a cyclic number.

It is not a de Polignac number, because 317471031209 - 2⁴ = 317471031193 is a prime.

It is not a weakly prime, because it can be changed into another prime (317471031109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158735515604 + 158735515605.

It is an arithmetic number, because the mean of its divisors is an integer number (158735515605).

Almost surely, 2^317471031209 is an apocalyptic number.

It is an amenable number.

317471031209 is a deficient number, since it is larger than the sum of its proper divisors (1).

317471031209 is an equidigital number, since it uses as much as digits as its factorization.

317471031209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 38.

The spelling of 317471031209 in words is "three hundred seventeen billion, four hundred seventy-one million, thirty-one thousand, two hundred nine".