442044031321 has 4 divisors (see below), whose sum is σ = 442354675072. Its totient is φ = 441733387572.

The previous prime is 442044031279. The next prime is 442044031339. The reversal of 442044031321 is 123130440244.

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 a cyclic number.

It is not a de Polignac number, because 442044031321 - 2⁷ = 442044031193 is a prime.

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 442044031321.

It is not an unprimeable number, because it can be changed into a prime (442044031021) 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, 155319741 + ... + 155322586.

It is an arithmetic number, because the mean of its divisors is an integer number (110588668768).

Almost surely, 2^442044031321 is an apocalyptic number.

It is an amenable number.

442044031321 is a deficient number, since it is larger than the sum of its proper divisors (310643751).

442044031321 is a wasteful number, since it uses less digits than its factorization.

442044031321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310643750.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 442044031321 its reverse (123130440244), we get a palindrome (565174471565).

The spelling of 442044031321 in words is "four hundred forty-two billion, forty-four million, thirty-one thousand, three hundred twenty-one".