323121213 has 24 divisors (see below), whose sum is σ = 476888256. Its totient is φ = 210772800.

The previous prime is 323121187. The next prime is 323121233. The reversal of 323121213 is 312121323.

It is not a de Polignac number, because 323121213 - 2¹⁷ = 322990141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323121233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85698 + ... + 89388.

It is an arithmetic number, because the mean of its divisors is an integer number (19870344).

Almost surely, 2^323121213 is an apocalyptic number.

It is an amenable number.

323121213 is a deficient number, since it is larger than the sum of its proper divisors (153767043).

323121213 is a wasteful number, since it uses less digits than its factorization.

323121213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3905 (or 3902 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 323121213 is about 17975.5726751611. The cubic root of 323121213 is about 686.2070203108.

Adding to 323121213 its reverse (312121323), we get a palindrome (635242536).

The spelling of 323121213 in words is "three hundred twenty-three million, one hundred twenty-one thousand, two hundred thirteen".