324213121 has 4 divisors (see below), whose sum is σ = 324789552. Its totient is φ = 323636692.

The previous prime is 324213107. The next prime is 324213133. The reversal of 324213121 is 121312423.

It is a happy number.

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 324213121 - 2⁵ = 324213089 is a prime.

It is a super-2 number, since 2×324213121² = 210228295657121282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (324213101) 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, 287371 + ... + 288496.

It is an arithmetic number, because the mean of its divisors is an integer number (81197388).

Almost surely, 2^324213121 is an apocalyptic number.

It is an amenable number.

324213121 is a deficient number, since it is larger than the sum of its proper divisors (576431).

324213121 is an equidigital number, since it uses as much as digits as its factorization.

324213121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576430.

The product of its digits is 288, while the sum is 19.

The square root of 324213121 is about 18005.9190545776. The cubic root of 324213121 is about 686.9791067495.

Adding to 324213121 its reverse (121312423), we get a palindrome (445525544).

The spelling of 324213121 in words is "three hundred twenty-four million, two hundred thirteen thousand, one hundred twenty-one".