324640013 has 2 divisors, whose sum is σ = 324640014. Its totient is φ = 324640012.

The previous prime is 324640003. The next prime is 324640031. The reversal of 324640013 is 310046423.

It is a happy number.

Together with next prime (324640031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 242954569 + 81685444 = 15587^2 + 9038^2 .

It is an emirp because it is prime and its reverse (310046423) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 324640013 - 2¹⁰ = 324638989 is a prime.

It is a super-2 number, since 2×324640013² = 210782276081280338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (324640003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162320006 + 162320007.

It is an arithmetic number, because the mean of its divisors is an integer number (162320007).

Almost surely, 2^324640013 is an apocalyptic number.

It is an amenable number.

324640013 is a deficient number, since it is larger than the sum of its proper divisors (1).

324640013 is an equidigital number, since it uses as much as digits as its factorization.

324640013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 324640013 is about 18017.7693680433. The cubic root of 324640013 is about 687.2804900530.

Adding to 324640013 its reverse (310046423), we get a palindrome (634686436).

The spelling of 324640013 in words is "three hundred twenty-four million, six hundred forty thousand, thirteen".