1323023213 has 2 divisors, whose sum is σ = 1323023214. Its totient is φ = 1323023212.

The previous prime is 1323023203. The next prime is 1323023279. The reversal of 1323023213 is 3123203231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1064521129 + 258502084 = 32627^2 + 16078^2 .

It is a cyclic number.

It is not a de Polignac number, because 1323023213 - 2⁴ = 1323023197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1323023203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661511606 + 661511607.

It is an arithmetic number, because the mean of its divisors is an integer number (661511607).

Almost surely, 2^1323023213 is an apocalyptic number.

It is an amenable number.

1323023213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323023213 is an equidigital number, since it uses as much as digits as its factorization.

1323023213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 1323023213 is about 36373.3860535419. The cubic root of 1323023213 is about 1097.7981334881.

Adding to 1323023213 its reverse (3123203231), we get a palindrome (4446226444).

The spelling of 1323023213 in words is "one billion, three hundred twenty-three million, twenty-three thousand, two hundred thirteen".