317438321 has 4 divisors (see below), whose sum is σ = 328384500. Its totient is φ = 306492144.

The previous prime is 317438311. The next prime is 317438333. The reversal of 317438321 is 123834713.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123834713 = 331 ⋅374123.

It can be written as a sum of positive squares in 2 ways, for example, as 147501025 + 169937296 = 12145^2 + 13036^2 .

It is a cyclic number.

It is not a de Polignac number, because 317438321 - 2²² = 313244017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (317438311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5473046 + ... + 5473103.

It is an arithmetic number, because the mean of its divisors is an integer number (82096125).

Almost surely, 2^317438321 is an apocalyptic number.

It is an amenable number.

317438321 is a deficient number, since it is larger than the sum of its proper divisors (10946179).

317438321 is a wasteful number, since it uses less digits than its factorization.

317438321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10946178.

The product of its digits is 12096, while the sum is 32.

The square root of 317438321 is about 17816.7988426653. The cubic root of 317438321 is about 682.1603159668.

The spelling of 317438321 in words is "three hundred seventeen million, four hundred thirty-eight thousand, three hundred twenty-one".