324321421 has 4 divisors (see below), whose sum is σ = 328228992. Its totient is φ = 320413852.

The previous prime is 324321409. The next prime is 324321443. The reversal of 324321421 is 124123423.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 324321421 - 2⁷ = 324321293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 324321392 and 324321401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (324321451) 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, 1953661 + ... + 1953826.

It is an arithmetic number, because the mean of its divisors is an integer number (82057248).

Almost surely, 2^324321421 is an apocalyptic number.

It is an amenable number.

324321421 is a deficient number, since it is larger than the sum of its proper divisors (3907571).

324321421 is an equidigital number, since it uses as much as digits as its factorization.

324321421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3907570.

The product of its digits is 1152, while the sum is 22.

The square root of 324321421 is about 18008.9261478857. The cubic root of 324321421 is about 687.0555909609.

Adding to 324321421 its reverse (124123423), we get a palindrome (448444844).

The spelling of 324321421 in words is "three hundred twenty-four million, three hundred twenty-one thousand, four hundred twenty-one".