444312313 has 4 divisors (see below), whose sum is σ = 444530788. Its totient is φ = 444093840.

The previous prime is 444312311. The next prime is 444312329. The reversal of 444312313 is 313213444.

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 372181264 + 72131049 = 19292^2 + 8493^2 .

It is a cyclic number.

It is not a de Polignac number, because 444312313 - 2¹ = 444312311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444312311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106158 + ... + 110263.

It is an arithmetic number, because the mean of its divisors is an integer number (111132697).

Almost surely, 2^444312313 is an apocalyptic number.

It is an amenable number.

444312313 is a deficient number, since it is larger than the sum of its proper divisors (218475).

444312313 is a wasteful number, since it uses less digits than its factorization.

444312313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218474.

The product of its digits is 3456, while the sum is 25.

The square root of 444312313 is about 21078.7170624780. The cubic root of 444312313 is about 763.0671945000.

Adding to 444312313 its reverse (313213444), we get a palindrome (757525757).

The spelling of 444312313 in words is "four hundred forty-four million, three hundred twelve thousand, three hundred thirteen".