317930138 has 8 divisors (see below), whose sum is σ = 477577620. Its totient is φ = 158737600.

The previous prime is 317930117. The next prime is 317930143. The reversal of 317930138 is 831039713.

It can be written as a sum of positive squares in 2 ways, for example, as 317089249 + 840889 = 17807^2 + 917^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 317930098 and 317930107.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111983 + ... + 114786.

Almost surely, 2^317930138 is an apocalyptic number.

317930138 is a deficient number, since it is larger than the sum of its proper divisors (159647482).

317930138 is a wasteful number, since it uses less digits than its factorization.

317930138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227472.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 317930138 is about 17830.5955593188. The cubic root of 317930138 is about 682.5124315339.

The spelling of 317930138 in words is "three hundred seventeen million, nine hundred thirty thousand, one hundred thirty-eight".