13521131343 has 6 divisors (see below), whose sum is σ = 19530523064. Its totient is φ = 9014087556.

The previous prime is 13521131341. The next prime is 13521131359. The reversal of 13521131343 is 34313112531.

13521131343 is a `hidden beast` number, since 1 + 3 + 521 + 1 + 3 + 134 + 3 = 666.

It is not a de Polignac number, because 13521131343 - 2¹ = 13521131341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13521131341) 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 5 ways as a sum of consecutive naturals, for example, 751173955 + ... + 751173972.

Almost surely, 2^13521131343 is an apocalyptic number.

13521131343 is a deficient number, since it is larger than the sum of its proper divisors (6009391721).

13521131343 is a wasteful number, since it uses less digits than its factorization.

13521131343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1502347933 (or 1502347930 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

Adding to 13521131343 its reverse (34313112531), we get a palindrome (47834243874).

The spelling of 13521131343 in words is "thirteen billion, five hundred twenty-one million, one hundred thirty-one thousand, three hundred forty-three".