317742547 has 4 divisors (see below), whose sum is σ = 318429280. Its totient is φ = 317055816.

The previous prime is 317742533. The next prime is 317742559. The reversal of 317742547 is 745247713.

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 317742547 - 2¹¹ = 317740499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (317742517) 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, 342672 + ... + 343597.

It is an arithmetic number, because the mean of its divisors is an integer number (79607320).

Almost surely, 2^317742547 is an apocalyptic number.

317742547 is a deficient number, since it is larger than the sum of its proper divisors (686733).

317742547 is an equidigital number, since it uses as much as digits as its factorization.

317742547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686732.

The product of its digits is 164640, while the sum is 40.

The square root of 317742547 is about 17825.3344148153. The cubic root of 317742547 is about 682.3781689355.

The spelling of 317742547 in words is "three hundred seventeen million, seven hundred forty-two thousand, five hundred forty-seven".