13031343305 has 4 divisors (see below), whose sum is σ = 15637611972. Its totient is φ = 10425074640.

The previous prime is 13031343277. The next prime is 13031343313. The reversal of 13031343305 is 50334313031.

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 9912790969 + 3118552336 = 99563^2 + 55844^2 .

It is not a de Polignac number, because 13031343305 - 2¹⁰ = 13031342281 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1303134326 + ... + 1303134335.

It is an arithmetic number, because the mean of its divisors is an integer number (3909402993).

Almost surely, 2^13031343305 is an apocalyptic number.

It is an amenable number.

13031343305 is a deficient number, since it is larger than the sum of its proper divisors (2606268667).

13031343305 is an equidigital number, since it uses as much as digits as its factorization.

13031343305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2606268666.

The product of its (nonzero) digits is 4860, while the sum is 26.

Adding to 13031343305 its reverse (50334313031), we get a palindrome (63365656336).

The spelling of 13031343305 in words is "thirteen billion, thirty-one million, three hundred forty-three thousand, three hundred five".