1323021823 has 2 divisors, whose sum is σ = 1323021824. Its totient is φ = 1323021822.

The previous prime is 1323021811. The next prime is 1323021829. The reversal of 1323021823 is 3281203231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1323021823 - 2¹³ = 1323013631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1323021829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661510911 + 661510912.

It is an arithmetic number, because the mean of its divisors is an integer number (661510912).

Almost surely, 2^1323021823 is an apocalyptic number.

1323021823 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323021823 is an equidigital number, since it uses as much as digits as its factorization.

1323021823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1323021823 is about 36373.3669461599. The cubic root of 1323021823 is about 1097.7977490303.

It can be divided in two parts, 13230 and 21823, that added together give a palindrome (35053).

The spelling of 1323021823 in words is "one billion, three hundred twenty-three million, twenty-one thousand, eight hundred twenty-three".