317140356647 has 4 divisors (see below), whose sum is σ = 318403864296. Its totient is φ = 315876849000.

The previous prime is 317140356629. The next prime is 317140356721. The reversal of 317140356647 is 746653041713.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 317140356647 - 2⁸ = 317140356391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317140356847) 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, 631753448 + ... + 631753949.

It is an arithmetic number, because the mean of its divisors is an integer number (79600966074).

Almost surely, 2^317140356647 is an apocalyptic number.

317140356647 is a deficient number, since it is larger than the sum of its proper divisors (1263507649).

317140356647 is a wasteful number, since it uses less digits than its factorization.

317140356647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263507648.

The product of its (nonzero) digits is 1270080, while the sum is 47.

The spelling of 317140356647 in words is "three hundred seventeen billion, one hundred forty million, three hundred fifty-six thousand, six hundred forty-seven".