317240231 has 8 divisors (see below), whose sum is σ = 395520384. Its totient is φ = 247200120.

The previous prime is 317240191. The next prime is 317240291. The reversal of 317240231 is 132042713.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 317240231 - 2⁶ = 317240167 is a prime.

It is a super-2 number, since 2×317240231² = 201282728329866722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 317240197 and 317240206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317240291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2059925 + ... + 2060078.

It is an arithmetic number, because the mean of its divisors is an integer number (49440048).

Almost surely, 2^317240231 is an apocalyptic number.

317240231 is a deficient number, since it is larger than the sum of its proper divisors (78280153).

317240231 is a wasteful number, since it uses less digits than its factorization.

317240231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4120021.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 317240231 is about 17811.2388957085. The cubic root of 317240231 is about 682.0183910154.

Adding to 317240231 its reverse (132042713), we get a palindrome (449282944).

The spelling of 317240231 in words is "three hundred seventeen million, two hundred forty thousand, two hundred thirty-one".