531664313 has 2 divisors, whose sum is σ = 531664314. Its totient is φ = 531664312.

The previous prime is 531664249. The next prime is 531664319. The reversal of 531664313 is 313466135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 481012624 + 50651689 = 21932^2 + 7117^2 .

It is a cyclic number.

It is not a de Polignac number, because 531664313 - 2⁶ = 531664249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 531664313.

It is not a weakly prime, because it can be changed into another prime (531664319) 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, 265832156 + 265832157.

It is an arithmetic number, because the mean of its divisors is an integer number (265832157).

Almost surely, 2^531664313 is an apocalyptic number.

It is an amenable number.

531664313 is a deficient number, since it is larger than the sum of its proper divisors (1).

531664313 is an equidigital number, since it uses as much as digits as its factorization.

531664313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 32.

The square root of 531664313 is about 23057.8471024508. The cubic root of 531664313 is about 810.1134388703.

The spelling of 531664313 in words is "five hundred thirty-one million, six hundred sixty-four thousand, three hundred thirteen".