1323130321 has 8 divisors (see below), whose sum is σ = 1345400000. Its totient is φ = 1300879440.

The previous prime is 1323130309. The next prime is 1323130327. The reversal of 1323130321 is 1230313231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1323130321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1323130327) 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 7 ways as a sum of consecutive naturals, for example, 262180 + ... + 267178.

It is an arithmetic number, because the mean of its divisors is an integer number (168175000).

Almost surely, 2^1323130321 is an apocalyptic number.

It is an amenable number.

1323130321 is a deficient number, since it is larger than the sum of its proper divisors (22269679).

1323130321 is an equidigital number, since it uses as much as digits as its factorization.

1323130321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9399.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1323130321 is about 36374.8583639854. The cubic root of 1323130321 is about 1097.8277575059.

Adding to 1323130321 its reverse (1230313231), we get a palindrome (2553443552).

The spelling of 1323130321 in words is "one billion, three hundred twenty-three million, one hundred thirty thousand, three hundred twenty-one".