11243434131 has 24 divisors (see below), whose sum is σ = 16363100000. Its totient is φ = 7439236992.

The previous prime is 11243434043. The next prime is 11243434171. The reversal of 11243434131 is 13143434211.

11243434131 is a `hidden beast` number, since 1 + 1 + 243 + 4 + 3 + 413 + 1 = 666.

It is not a de Polignac number, because 11243434131 - 2⁷ = 11243434003 is a prime.

It is a super-2 number, since 2×11243434131² (a number of 21 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 = 11243434095 and 11243434104.

It is not an unprimeable number, because it can be changed into a prime (11243434171) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 724845 + ... + 740193.

Almost surely, 2^11243434131 is an apocalyptic number.

11243434131 is a deficient number, since it is larger than the sum of its proper divisors (5119665869).

11243434131 is a wasteful number, since it uses less digits than its factorization.

11243434131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15963 (or 15960 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

Adding to 11243434131 its reverse (13143434211), we get a palindrome (24386868342).

The spelling of 11243434131 in words is "eleven billion, two hundred forty-three million, four hundred thirty-four thousand, one hundred thirty-one".