324164021 has 2 divisors, whose sum is σ = 324164022. Its totient is φ = 324164020.

The previous prime is 324163991. The next prime is 324164033. The reversal of 324164021 is 120461423.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198499921 + 125664100 = 14089^2 + 11210^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-324164021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (324164221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162082010 + 162082011.

It is an arithmetic number, because the mean of its divisors is an integer number (162082011).

Almost surely, 2^324164021 is an apocalyptic number.

It is an amenable number.

324164021 is a deficient number, since it is larger than the sum of its proper divisors (1).

324164021 is an equidigital number, since it uses as much as digits as its factorization.

324164021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 324164021 is about 18004.5555624125. Note that the first 4 decimals coincide. The cubic root of 324164021 is about 686.9444254705.

The spelling of 324164021 in words is "three hundred twenty-four million, one hundred sixty-four thousand, twenty-one".