443312434021 has 4 divisors (see below), whose sum is σ = 443314327852. Its totient is φ = 443310540192.

The previous prime is 443312434013. The next prime is 443312434043. The reversal of 443312434021 is 120434213344.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 232241103396 + 211071330625 = 481914^2 + 459425^2 .

It is a cyclic number.

It is not a de Polignac number, because 443312434021 - 2³ = 443312434013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (443312434091) 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, 536496 + ... + 1083721.

It is an arithmetic number, because the mean of its divisors is an integer number (110828581963).

Almost surely, 2^443312434021 is an apocalyptic number.

It is an amenable number.

443312434021 is a deficient number, since it is larger than the sum of its proper divisors (1893831).

443312434021 is a wasteful number, since it uses less digits than its factorization.

443312434021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1893830.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 443312434021 its reverse (120434213344), we get a palindrome (563746647365).

The spelling of 443312434021 in words is "four hundred forty-three billion, three hundred twelve million, four hundred thirty-four thousand, twenty-one".