13131163505 has 8 divisors (see below), whose sum is σ = 15992581632. Its totient is φ = 10348140528.

The previous prime is 13131163501. The next prime is 13131163517. The reversal of 13131163505 is 50536113131.

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 13131163505 - 2² = 13131163501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13131163501) 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 7 ways as a sum of consecutive naturals, for example, 19598417 + ... + 19599086.

It is an arithmetic number, because the mean of its divisors is an integer number (1999072704).

Almost surely, 2^13131163505 is an apocalyptic number.

It is an amenable number.

13131163505 is a deficient number, since it is larger than the sum of its proper divisors (2861418127).

13131163505 is an equidigital number, since it uses as much as digits as its factorization.

13131163505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39197575.

The product of its (nonzero) digits is 4050, while the sum is 29.

Adding to 13131163505 its reverse (50536113131), we get a palindrome (63667276636).

The spelling of 13131163505 in words is "thirteen billion, one hundred thirty-one million, one hundred sixty-three thousand, five hundred five".