1321441443 has 12 divisors (see below), whose sum is σ = 2181427248. Its totient is φ = 755109360.

The previous prime is 1321441403. The next prime is 1321441481. The reversal of 1321441443 is 3441441231.

1321441443 is a `hidden beast` number, since 1 + 3 + 214 + 4 + 1 + 443 = 666.

It is not a de Polignac number, because 1321441443 - 2⁹ = 1321440931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1321441403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10487568 + ... + 10487693.

It is an arithmetic number, because the mean of its divisors is an integer number (181785604).

Almost surely, 2^1321441443 is an apocalyptic number.

1321441443 is a deficient number, since it is larger than the sum of its proper divisors (859985805).

1321441443 is a wasteful number, since it uses less digits than its factorization.

1321441443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20975274 (or 20975271 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 1321441443 is about 36351.6360429624. The cubic root of 1321441443 is about 1097.3604599791.

Adding to 1321441443 its reverse (3441441231), we get a palindrome (4762882674).

The spelling of 1321441443 in words is "one billion, three hundred twenty-one million, four hundred forty-one thousand, four hundred forty-three".