317331640 has 16 divisors (see below), whose sum is σ = 713996280. Its totient is φ = 126932640.

The previous prime is 317331629. The next prime is 317331643. The reversal of 317331640 is 46133713.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 317331599 and 317331608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317331643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3966606 + ... + 3966685.

Almost surely, 2^317331640 is an apocalyptic number.

It is an amenable number.

317331640 is an abundant number, since it is smaller than the sum of its proper divisors (396664640).

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

317331640 is a wasteful number, since it uses less digits than its factorization.

317331640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7933302 (or 7933298 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 317331640 is about 17813.8047592310. The cubic root of 317331640 is about 682.0838898879.

The spelling of 317331640 in words is "three hundred seventeen million, three hundred thirty-one thousand, six hundred forty".