444201311321 has 4 divisors (see below), whose sum is σ = 444202693044. Its totient is φ = 444199929600.

The previous prime is 444201311269. The next prime is 444201311377. The reversal of 444201311321 is 123113102444.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 73246009600 + 370955301721 = 270640^2 + 609061^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-444201311321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444201319321) 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, 72581 + ... + 945341.

It is an arithmetic number, because the mean of its divisors is an integer number (111050673261).

Almost surely, 2^444201311321 is an apocalyptic number.

It is an amenable number.

444201311321 is a deficient number, since it is larger than the sum of its proper divisors (1381723).

444201311321 is an equidigital number, since it uses as much as digits as its factorization.

444201311321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381722.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 444201311321 its reverse (123113102444), we get a palindrome (567314413765).

The spelling of 444201311321 in words is "four hundred forty-four billion, two hundred one million, three hundred eleven thousand, three hundred twenty-one".