317242 has 4 divisors (see below), whose sum is σ = 475866. Its totient is φ = 158620.

The previous prime is 317227. The next prime is 317257. The reversal of 317242 is 242713.

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

It is an interprime number because it is at equal distance from previous prime (317227) and next prime (317257).

It can be written as a sum of positive squares in only one way, i.e., 312481 + 4761 = 559^2 + 69^2 .

It is an unprimeable number.

317242 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79309 + ... + 79312.

2³¹⁷²⁴² is an apocalyptic number.

317242 is a deficient number, since it is larger than the sum of its proper divisors (158624).

317242 is a wasteful number, since it uses less digits than its factorization.

317242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158623.

The product of its digits is 336, while the sum is 19.

The square root of 317242 is about 563.2423989722. The cubic root of 317242 is about 68.2019658707.

Adding to 317242 its reverse (242713), we get a palindrome (559955).

Subtracting from 317242 its reverse (242713), we obtain a square (74529 = 273²).

The spelling of 317242 in words is "three hundred seventeen thousand, two hundred forty-two", and thus it is an iban number.