13231313131 has 4 divisors (see below), whose sum is σ = 13232819232. Its totient is φ = 13229807032.

The previous prime is 13231313111. The next prime is 13231313203. The reversal of 13231313131 is 13131313231.

13231313131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13231313131 - 2⁵ = 13231313099 is a prime.

It is a super-2 number, since 2×13231313131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13231313111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 739795 + ... + 757468.

It is an arithmetic number, because the mean of its divisors is an integer number (3308204808).

Almost surely, 2^13231313131 is an apocalyptic number.

13231313131 is a deficient number, since it is larger than the sum of its proper divisors (1506101).

13231313131 is an equidigital number, since it uses as much as digits as its factorization.

13231313131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506100.

The product of its digits is 486, while the sum is 22.

Adding to 13231313131 its reverse (13131313231), we get a palindrome (26362626362).

The spelling of 13231313131 in words is "thirteen billion, two hundred thirty-one million, three hundred thirteen thousand, one hundred thirty-one".