317439897 has 8 divisors (see below), whose sum is σ = 445529760. Its totient is φ = 200488320.

The previous prime is 317439893. The next prime is 317439911. The reversal of 317439897 is 798934713.

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

It is not a de Polignac number, because 317439897 - 2² = 317439893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (317439893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2784504 + ... + 2784617.

It is an arithmetic number, because the mean of its divisors is an integer number (55691220).

Almost surely, 2^317439897 is an apocalyptic number.

It is an amenable number.

317439897 is a deficient number, since it is larger than the sum of its proper divisors (128089863).

317439897 is a wasteful number, since it uses less digits than its factorization.

317439897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5569143.

The product of its digits is 1143072, while the sum is 51.

The square root of 317439897 is about 17816.8430705330. The cubic root of 317439897 is about 682.1614448820.

It can be divided in two parts, 3174 and 39897, that added together give a triangular number (43071 = T₂₉₃).

The spelling of 317439897 in words is "three hundred seventeen million, four hundred thirty-nine thousand, eight hundred ninety-seven".