324530981 has 2 divisors, whose sum is σ = 324530982. Its totient is φ = 324530980.

The previous prime is 324530977. The next prime is 324530993. The reversal of 324530981 is 189035423.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 277389025 + 47141956 = 16655^2 + 6866^2 .

It is a cyclic number.

It is not a de Polignac number, because 324530981 - 2² = 324530977 is a prime.

It is a super-2 number, since 2×324530981² = 210640715257644722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (324530951) 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, 162265490 + 162265491.

It is an arithmetic number, because the mean of its divisors is an integer number (162265491).

Almost surely, 2^324530981 is an apocalyptic number.

It is an amenable number.

324530981 is a deficient number, since it is larger than the sum of its proper divisors (1).

324530981 is an equidigital number, since it uses as much as digits as its factorization.

324530981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 324530981 is about 18014.7434341986. The cubic root of 324530981 is about 687.2035392212.

The spelling of 324530981 in words is "three hundred twenty-four million, five hundred thirty thousand, nine hundred eighty-one".