13131313231131 has 6 divisors (see below), whose sum is σ = 18967452444980. Its totient is φ = 8754208820748.

The previous prime is 13131313231117. The next prime is 13131313231181. The reversal of 13131313231131 is 13113231313131.

13131313231131 is a `hidden beast` number, since 1 + 3 + 1 + 3 + 1 + 313 + 2 + 311 + 31 = 666.

It is not a de Polignac number, because 13131313231131 - 2⁹ = 13131313230619 is a prime.

It is a super-2 number, since 2×13131313231131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13131313231095 and 13131313231104.

It is not an unprimeable number, because it can be changed into a prime (13131313231111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 729517401721 + ... + 729517401738.

Almost surely, 2^{13131313231131} is an apocalyptic number.

13131313231131 is a deficient number, since it is larger than the sum of its proper divisors (5836139213849).

13131313231131 is a wasteful number, since it uses less digits than its factorization.

13131313231131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1459034803465 (or 1459034803462 counting only the distinct ones).

The product of its digits is 1458, while the sum is 27.

Adding to 13131313231131 its reverse (13113231313131), we get a palindrome (26244544544262).

The spelling of 13131313231131 in words is "thirteen trillion, one hundred thirty-one billion, three hundred thirteen million, two hundred thirty-one thousand, one hundred thirty-one".