1323443213 has 4 divisors (see below), whose sum is σ = 1324480860. Its totient is φ = 1322405568.

The previous prime is 1323443201. The next prime is 1323443237. The reversal of 1323443213 is 3123443231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 547653604 + 775789609 = 23402^2 + 27853^2 .

It is a cyclic number.

It is not a de Polignac number, because 1323443213 - 2⁴ = 1323443197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323463213) 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 3 ways as a sum of consecutive naturals, for example, 516908 + ... + 519461.

It is an arithmetic number, because the mean of its divisors is an integer number (331120215).

Almost surely, 2^1323443213 is an apocalyptic number.

It is an amenable number.

1323443213 is a deficient number, since it is larger than the sum of its proper divisors (1037647).

1323443213 is a wasteful number, since it uses less digits than its factorization.

1323443213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037646.

The product of its digits is 5184, while the sum is 26.

The square root of 1323443213 is about 36379.1590474546. The cubic root of 1323443213 is about 1097.9142882741.

Adding to 1323443213 its reverse (3123443231), we get a palindrome (4446886444).

The spelling of 1323443213 in words is "one billion, three hundred twenty-three million, four hundred forty-three thousand, two hundred thirteen".