317176421 has 2 divisors, whose sum is σ = 317176422. Its totient is φ = 317176420.

The previous prime is 317176381. The next prime is 317176439. The reversal of 317176421 is 124671713.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 313679521 + 3496900 = 17711^2 + 1870^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-317176421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (317176441) 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 as a sum of consecutive naturals, namely, 158588210 + 158588211.

It is an arithmetic number, because the mean of its divisors is an integer number (158588211).

Almost surely, 2^317176421 is an apocalyptic number.

It is an amenable number.

317176421 is a deficient number, since it is larger than the sum of its proper divisors (1).

317176421 is an equidigital number, since it uses as much as digits as its factorization.

317176421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7056, while the sum is 32.

The square root of 317176421 is about 17809.4475209087. The cubic root of 317176421 is about 681.9726606745.

The spelling of 317176421 in words is "three hundred seventeen million, one hundred seventy-six thousand, four hundred twenty-one".