531018317 has 2 divisors, whose sum is σ = 531018318. Its totient is φ = 531018316.

The previous prime is 531018311. The next prime is 531018331. The reversal of 531018317 is 713810135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 477815881 + 53202436 = 21859^2 + 7294^2 .

It is a cyclic number.

It is not a de Polignac number, because 531018317 - 2¹⁰ = 531017293 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 531018317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531018311) 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, 265509158 + 265509159.

It is an arithmetic number, because the mean of its divisors is an integer number (265509159).

Almost surely, 2^531018317 is an apocalyptic number.

It is an amenable number.

531018317 is a deficient number, since it is larger than the sum of its proper divisors (1).

531018317 is an equidigital number, since it uses as much as digits as its factorization.

531018317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 531018317 is about 23043.8346852255. The cubic root of 531018317 is about 809.7851978305.

The spelling of 531018317 in words is "five hundred thirty-one million, eighteen thousand, three hundred seventeen".