317289749 has 20 divisors (see below), whose sum is σ = 374034336. Its totient is φ = 269112312.

The previous prime is 317289703. The next prime is 317289757. The reversal of 317289749 is 947982713.

It is not a de Polignac number, because 317289749 - 2²⁰ = 316241173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 317289697 and 317289706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317289449) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 246662 + ... + 247944.

Almost surely, 2^317289749 is an apocalyptic number.

It is an amenable number.

317289749 is a deficient number, since it is larger than the sum of its proper divisors (56744587).

317289749 is an equidigital number, since it uses as much as digits as its factorization.

317289749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414 (or 1393 counting only the distinct ones).

The product of its digits is 762048, while the sum is 50.

The square root of 317289749 is about 17812.6289188317. The cubic root of 317289749 is about 682.0538745663.

The spelling of 317289749 in words is "three hundred seventeen million, two hundred eighty-nine thousand, seven hundred forty-nine".