1320321441 has 4 divisors (see below), whose sum is σ = 1760428592. Its totient is φ = 880214292.

The previous prime is 1320321427. The next prime is 1320321449. The reversal of 1320321441 is 1441230231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1320321441 - 2⁶ = 1320321377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1320321449) 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 in 3 ways as a sum of consecutive naturals, for example, 220053571 + ... + 220053576.

It is an arithmetic number, because the mean of its divisors is an integer number (440107148).

Almost surely, 2^1320321441 is an apocalyptic number.

It is an amenable number.

1320321441 is a deficient number, since it is larger than the sum of its proper divisors (440107151).

1320321441 is an equidigital number, since it uses as much as digits as its factorization.

1320321441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440107150.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1320321441 is about 36336.2276660635. The cubic root of 1320321441 is about 1097.0503457700.

Adding to 1320321441 its reverse (1441230231), we get a palindrome (2761551672).

The spelling of 1320321441 in words is "one billion, three hundred twenty million, three hundred twenty-one thousand, four hundred forty-one".