11543434431 has 8 divisors (see below), whose sum is σ = 15527452080. Its totient is φ = 7627519872.

The previous prime is 11543434411. The next prime is 11543434433. The reversal of 11543434431 is 13443434511.

11543434431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11543434431 - 2¹⁹ = 11542910143 is a prime.

It is a super-4 number, since 4×11543434431⁴ (a number of 41 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 11543434392 and 11543434401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11543434433) 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 7 ways as a sum of consecutive naturals, for example, 17025376 + ... + 17026053.

It is an arithmetic number, because the mean of its divisors is an integer number (1940931510).

Almost surely, 2^11543434431 is an apocalyptic number.

11543434431 is a deficient number, since it is larger than the sum of its proper divisors (3984017649).

11543434431 is a wasteful number, since it uses less digits than its factorization.

11543434431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34051545.

The product of its digits is 34560, while the sum is 33.

Adding to 11543434431 its reverse (13443434511), we get a palindrome (24986868942).

The spelling of 11543434431 in words is "eleven billion, five hundred forty-three million, four hundred thirty-four thousand, four hundred thirty-one".