317540245 has 16 divisors (see below), whose sum is σ = 419732352. Its totient is φ = 228692160.

The previous prime is 317540239. The next prime is 317540261. The reversal of 317540245 is 542045713.

It is not a de Polignac number, because 317540245 - 2⁵ = 317540213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22362 + ... + 33691.

It is an arithmetic number, because the mean of its divisors is an integer number (26233272).

Almost surely, 2^317540245 is an apocalyptic number.

It is an amenable number.

317540245 is a deficient number, since it is larger than the sum of its proper divisors (102192107).

317540245 is a wasteful number, since it uses less digits than its factorization.

317540245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56172.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 317540245 is about 17819.6589473536. The cubic root of 317540245 is about 682.2333181463.

Adding to 317540245 its reverse (542045713), we get a palindrome (859585958).

The spelling of 317540245 in words is "three hundred seventeen million, five hundred forty thousand, two hundred forty-five".