324432021 has 8 divisors (see below), whose sum is σ = 444267424. Its totient is φ = 210442320.

The previous prime is 324432007. The next prime is 324432061. The reversal of 324432021 is 120234423.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 324432021 - 2⁹ = 324431509 is a prime.

It is a super-2 number, since 2×324432021² = 210512272500288882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (324432061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1461295 + ... + 1461516.

It is an arithmetic number, because the mean of its divisors is an integer number (55533428).

Almost surely, 2^324432021 is an apocalyptic number.

It is an amenable number.

324432021 is a deficient number, since it is larger than the sum of its proper divisors (119835403).

324432021 is a wasteful number, since it uses less digits than its factorization.

324432021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2922851.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 324432021 is about 18011.9965856093. The cubic root of 324432021 is about 687.1336819196.

Adding to 324432021 its reverse (120234423), we get a palindrome (444666444).

The spelling of 324432021 in words is "three hundred twenty-four million, four hundred thirty-two thousand, twenty-one".