1323220237 has 2 divisors, whose sum is σ = 1323220238. Its totient is φ = 1323220236.

The previous prime is 1323220181. The next prime is 1323220253. The reversal of 1323220237 is 7320223231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 868421961 + 454798276 = 29469^2 + 21326^2 .

It is a cyclic number.

It is not a de Polignac number, because 1323220237 - 2²⁷ = 1189002509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1323220267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661610118 + 661610119.

It is an arithmetic number, because the mean of its divisors is an integer number (661610119).

Almost surely, 2^1323220237 is an apocalyptic number.

It is an amenable number.

1323220237 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323220237 is an equidigital number, since it uses as much as digits as its factorization.

1323220237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 1323220237 is about 36376.0943065635. The cubic root of 1323220237 is about 1097.8526253120.

Adding to 1323220237 its reverse (7320223231), we get a palindrome (8643443468).

The spelling of 1323220237 in words is "one billion, three hundred twenty-three million, two hundred twenty thousand, two hundred thirty-seven".