317216407 has 2 divisors, whose sum is σ = 317216408. Its totient is φ = 317216406.

The previous prime is 317216401. The next prime is 317216453. The reversal of 317216407 is 704612713.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 317216407 - 2³ = 317216399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (317216401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158608203 + 158608204.

It is an arithmetic number, because the mean of its divisors is an integer number (158608204).

Almost surely, 2^317216407 is an apocalyptic number.

317216407 is a deficient number, since it is larger than the sum of its proper divisors (1).

317216407 is an equidigital number, since it uses as much as digits as its factorization.

317216407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 317216407 is about 17810.5700919426. The cubic root of 317216407 is about 682.0013179256.

The spelling of 317216407 in words is "three hundred seventeen million, two hundred sixteen thousand, four hundred seven".