317320543 has 2 divisors, whose sum is σ = 317320544. Its totient is φ = 317320542.

The previous prime is 317320517. The next prime is 317320567. The reversal of 317320543 is 345023713.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-317320543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (317320243) 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 as a sum of consecutive naturals, namely, 158660271 + 158660272.

It is an arithmetic number, because the mean of its divisors is an integer number (158660272).

Almost surely, 2^317320543 is an apocalyptic number.

317320543 is a deficient number, since it is larger than the sum of its proper divisors (1).

317320543 is an equidigital number, since it uses as much as digits as its factorization.

317320543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 317320543 is about 17813.4932845863. The cubic root of 317320543 is about 682.0759390333.

It can be divided in two parts, 3173 and 20543, that added together give a square (23716 = 154²).

The spelling of 317320543 in words is "three hundred seventeen million, three hundred twenty thousand, five hundred forty-three".