1330322321 has 4 divisors (see below), whose sum is σ = 1330802100. Its totient is φ = 1329842544.

The previous prime is 1330322299. The next prime is 1330322327. The reversal of 1330322321 is 1232230331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1232230331 = 8521 ⋅144611.

It can be written as a sum of positive squares in 2 ways, for example, as 712302721 + 618019600 = 26689^2 + 24860^2 .

It is a cyclic number.

It is not a de Polignac number, because 1330322321 - 2³⁰ = 256580497 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1330322293 and 1330322302.

It is not an unprimeable number, because it can be changed into a prime (1330322327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235706 + ... + 241283.

It is an arithmetic number, because the mean of its divisors is an integer number (332700525).

Almost surely, 2^1330322321 is an apocalyptic number.

It is an amenable number.

1330322321 is a deficient number, since it is larger than the sum of its proper divisors (479779).

1330322321 is an equidigital number, since it uses as much as digits as its factorization.

1330322321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479778.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 1330322321 is about 36473.5838792954. The cubic root of 1330322321 is about 1099.8132798771.

Adding to 1330322321 its reverse (1232230331), we get a palindrome (2562552652).

The spelling of 1330322321 in words is "one billion, three hundred thirty million, three hundred twenty-two thousand, three hundred twenty-one".