317443842 has 12 divisors (see below), whose sum is σ = 687795030. Its totient is φ = 105814608.

The previous prime is 317443829. The next prime is 317443843. The reversal of 317443842 is 248344713.

It can be written as a sum of positive squares in only one way, i.e., 259242201 + 58201641 = 16101^2 + 7629^2 .

It is a junction number, because it is equal to n+sod(n) for n = 317443797 and 317443806.

It is not an unprimeable number, because it can be changed into a prime (317443843) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8817867 + ... + 8817902.

Almost surely, 2^317443842 is an apocalyptic number.

317443842 is an abundant number, since it is smaller than the sum of its proper divisors (370351188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

317443842 is a wasteful number, since it uses less digits than its factorization.

317443842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17635777 (or 17635774 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 317443842 is about 17816.9537800377. The cubic root of 317443842 is about 682.1642707353.

The spelling of 317443842 in words is "three hundred seventeen million, four hundred forty-three thousand, eight hundred forty-two".