444431331313 has 8 divisors (see below), whose sum is σ = 470792147400. Its totient is φ = 418094714880.

The previous prime is 444431331277. The next prime is 444431331397. The reversal of 444431331313 is 313133134444.

It can be written as a sum of positive squares in 4 ways, for example, as 226316178529 + 218115152784 = 475727^2 + 467028^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 444431331313 - 2³³ = 435841396721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444431331413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6012088 + ... + 6085561.

It is an arithmetic number, because the mean of its divisors is an integer number (58849018425).

Almost surely, 2^444431331313 is an apocalyptic number.

It is an amenable number.

444431331313 is a deficient number, since it is larger than the sum of its proper divisors (26360816087).

444431331313 is a wasteful number, since it uses less digits than its factorization.

444431331313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12099827.

The product of its digits is 62208, while the sum is 34.

Adding to 444431331313 its reverse (313133134444), we get a palindrome (757564465757).

The spelling of 444431331313 in words is "four hundred forty-four billion, four hundred thirty-one million, three hundred thirty-one thousand, three hundred thirteen".