1323331321 has 16 divisors (see below), whose sum is σ = 1461703936. Its totient is φ = 1190318976.

The previous prime is 1323331309. The next prime is 1323331337. The reversal of 1323331321 is 1231333231.

It is a cyclic number.

It is not a de Polignac number, because 1323331321 - 2⁹ = 1323330809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1323331292 and 1323331301.

It is not an unprimeable number, because it can be changed into a prime (1323331351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256261 + ... + 261373.

It is an arithmetic number, because the mean of its divisors is an integer number (91356496).

Almost surely, 2^1323331321 is an apocalyptic number.

It is an amenable number.

1323331321 is a deficient number, since it is larger than the sum of its proper divisors (138372615).

1323331321 is a wasteful number, since it uses less digits than its factorization.

1323331321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5632.

The product of its digits is 972, while the sum is 22.

The square root of 1323331321 is about 36377.6211564198. The cubic root of 1323331321 is about 1097.8833459346.

Adding to 1323331321 its reverse (1231333231), we get a palindrome (2554664552).

The spelling of 1323331321 in words is "one billion, three hundred twenty-three million, three hundred thirty-one thousand, three hundred twenty-one".