443131432224321 has 16 divisors (see below), whose sum is σ = 591387088542848. Its totient is φ = 295148419920000.

The previous prime is 443131432224277. The next prime is 443131432224343. The reversal of 443131432224321 is 123422234131344.

It is a de Polignac number, because none of the positive numbers 2^k-443131432224321 is a prime.

It is a super-2 number, since 2×443131432224321² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 443131432224321.

It is not an unprimeable number, because it can be changed into a prime (443131432224391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25697196 + ... + 39326946.

It is an arithmetic number, because the mean of its divisors is an integer number (36961693033928).

Almost surely, 2^{443131432224321} is an apocalyptic number.

It is an amenable number.

443131432224321 is a deficient number, since it is larger than the sum of its proper divisors (148255656318527).

443131432224321 is a wasteful number, since it uses less digits than its factorization.

443131432224321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13639752.

The product of its digits is 331776, while the sum is 39.

Adding to 443131432224321 its reverse (123422234131344), we get a palindrome (566553666355665).

The spelling of 443131432224321 in words is "four hundred forty-three trillion, one hundred thirty-one billion, four hundred thirty-two million, two hundred twenty-four thousand, three hundred twenty-one".