1320023323 has 4 divisors (see below), whose sum is σ = 1321304688. Its totient is φ = 1318741960.

The previous prime is 1320023281. The next prime is 1320023377. The reversal of 1320023323 is 3233200231.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1320023323 - 2¹⁷ = 1319892251 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1320023323.

It is not an unprimeable number, because it can be changed into a prime (1320053323) 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 in 3 ways as a sum of consecutive naturals, for example, 639136 + ... + 641197.

It is an arithmetic number, because the mean of its divisors is an integer number (330326172).

Almost surely, 2^1320023323 is an apocalyptic number.

1320023323 is a deficient number, since it is larger than the sum of its proper divisors (1281365).

1320023323 is a wasteful number, since it uses less digits than its factorization.

1320023323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1281364.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 1320023323 is about 36332.1252199758. The cubic root of 1320023323 is about 1096.9677711628.

Adding to 1320023323 its reverse (3233200231), we get a palindrome (4553223554).

The spelling of 1320023323 in words is "one billion, three hundred twenty million, twenty-three thousand, three hundred twenty-three".