13131131343 has 16 divisors (see below), whose sum is σ = 19214205696. Its totient is φ = 7910603840.

The previous prime is 13131131339. The next prime is 13131131359. The reversal of 13131131343 is 34313113131.

It is a cyclic number.

It is not a de Polignac number, because 13131131343 - 2² = 13131131339 is a prime.

It is a super-2 number, since 2×13131131343² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131131393) 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 15 ways as a sum of consecutive naturals, for example, 1185846 + ... + 1196867.

It is an arithmetic number, because the mean of its divisors is an integer number (1200887856).

Almost surely, 2^13131131343 is an apocalyptic number.

13131131343 is a deficient number, since it is larger than the sum of its proper divisors (6083074353).

13131131343 is a wasteful number, since it uses less digits than its factorization.

13131131343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2382894.

The product of its digits is 972, while the sum is 24.

Adding to 13131131343 its reverse (34313113131), we get a palindrome (47444244474).

The spelling of 13131131343 in words is "thirteen billion, one hundred thirty-one million, one hundred thirty-one thousand, three hundred forty-three".