317728148 has 6 divisors (see below), whose sum is σ = 556024266. Its totient is φ = 158864072.

The previous prime is 317728129. The next prime is 317728171. The reversal of 317728148 is 841827713.

317728148 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 260241424 + 57486724 = 16132^2 + 7582^2 .

It is a super-3 number, since 3×317728148³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39716015 + ... + 39716022.

It is an arithmetic number, because the mean of its divisors is an integer number (92670711).

Almost surely, 2^317728148 is an apocalyptic number.

It is an amenable number.

317728148 is a deficient number, since it is larger than the sum of its proper divisors (238296118).

317728148 is a wasteful number, since it uses less digits than its factorization.

317728148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79432041 (or 79432039 counting only the distinct ones).

The product of its digits is 75264, while the sum is 41.

The square root of 317728148 is about 17824.9305187987. The cubic root of 317728148 is about 682.3678611022.

The spelling of 317728148 in words is "three hundred seventeen million, seven hundred twenty-eight thousand, one hundred forty-eight".