1304431444313 has 4 divisors (see below), whose sum is σ = 1316398705380. Its totient is φ = 1292464183248.

The previous prime is 1304431444307. The next prime is 1304431444331. The reversal of 1304431444313 is 3134441344031.

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 874006223689 + 430425220624 = 934883^2 + 656068^2 .

It is a cyclic number.

It is not a de Polignac number, because 1304431444313 - 2¹⁸ = 1304431182169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1304431444333) 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, 5983630370 + ... + 5983630587.

It is an arithmetic number, because the mean of its divisors is an integer number (329099676345).

Almost surely, 2^{1304431444313} is an apocalyptic number.

It is an amenable number.

1304431444313 is a deficient number, since it is larger than the sum of its proper divisors (11967261067).

1304431444313 is a wasteful number, since it uses less digits than its factorization.

1304431444313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11967261066.

The product of its (nonzero) digits is 82944, while the sum is 35.

Adding to 1304431444313 its reverse (3134441344031), we get a palindrome (4438872788344).

The spelling of 1304431444313 in words is "one trillion, three hundred four billion, four hundred thirty-one million, four hundred forty-four thousand, three hundred thirteen".