324420073 has 2 divisors, whose sum is σ = 324420074. Its totient is φ = 324420072.

The previous prime is 324420067. The next prime is 324420119. The reversal of 324420073 is 370024423.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 323568144 + 851929 = 17988^2 + 923^2 .

It is an emirp because it is prime and its reverse (370024423) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 324420073 - 2¹³ = 324411881 is a prime.

It is not a weakly prime, because it can be changed into another prime (324420973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162210036 + 162210037.

It is an arithmetic number, because the mean of its divisors is an integer number (162210037).

Almost surely, 2^324420073 is an apocalyptic number.

It is an amenable number.

324420073 is a deficient number, since it is larger than the sum of its proper divisors (1).

324420073 is an equidigital number, since it uses as much as digits as its factorization.

324420073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 25.

The square root of 324420073 is about 18011.6649147157. The cubic root of 324420073 is about 687.1252466918.

Adding to 324420073 its reverse (370024423), we get a palindrome (694444496).

The spelling of 324420073 in words is "three hundred twenty-four million, four hundred twenty thousand, seventy-three".