324138193 has 4 divisors (see below), whose sum is σ = 324955060. Its totient is φ = 323321328.

The previous prime is 324138187. The next prime is 324138197. The reversal of 324138193 is 391831423.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 78996544 + 245141649 = 8888^2 + 15657^2 .

It is a cyclic number.

It is not a de Polignac number, because 324138193 - 2¹⁷ = 324007121 is a prime.

It is a super-2 number, since 2×324138193² = 210131136322610498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (324138197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 407838 + ... + 408631.

It is an arithmetic number, because the mean of its divisors is an integer number (81238765).

Almost surely, 2^324138193 is an apocalyptic number.

It is an amenable number.

324138193 is a deficient number, since it is larger than the sum of its proper divisors (816867).

324138193 is an equidigital number, since it uses as much as digits as its factorization.

324138193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816866.

The product of its digits is 15552, while the sum is 34.

The square root of 324138193 is about 18003.8382852102. The cubic root of 324138193 is about 686.9261807233.

The spelling of 324138193 in words is "three hundred twenty-four million, one hundred thirty-eight thousand, one hundred ninety-three".