1320452321 has 2 divisors, whose sum is σ = 1320452322. Its totient is φ = 1320452320.

The previous prime is 1320452317. The next prime is 1320452351. The reversal of 1320452321 is 1232540231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 951043921 + 369408400 = 30839^2 + 19220^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320452321 - 2² = 1320452317 is a prime.

It is not a weakly prime, because it can be changed into another prime (1320452311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660226160 + 660226161.

It is an arithmetic number, because the mean of its divisors is an integer number (660226161).

Almost surely, 2^1320452321 is an apocalyptic number.

It is an amenable number.

1320452321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320452321 is an equidigital number, since it uses as much as digits as its factorization.

1320452321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1320452321 is about 36338.0285788869. The cubic root of 1320452321 is about 1097.0865938130.

Adding to 1320452321 its reverse (1232540231), we get a palindrome (2552992552).

The spelling of 1320452321 in words is "one billion, three hundred twenty million, four hundred fifty-two thousand, three hundred twenty-one".