11431334431 has 8 divisors (see below), whose sum is σ = 12473096400. Its totient is φ = 10389997440.

The previous prime is 11431334417. The next prime is 11431334449. The reversal of 11431334431 is 13443313411.

11431334431 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 a cyclic number.

It is not a de Polignac number, because 11431334431 - 2²⁹ = 10894463519 is a prime.

It is a super-2 number, since 2×11431334431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11431334431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11431334491) 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, 48636 + ... + 158833.

It is an arithmetic number, because the mean of its divisors is an integer number (1559137050).

Almost surely, 2^11431334431 is an apocalyptic number.

11431334431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11431334431 is a deficient number, since it is larger than the sum of its proper divisors (1041761969).

11431334431 is a wasteful number, since it uses less digits than its factorization.

11431334431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212489.

The product of its digits is 5184, while the sum is 28.

Adding to 11431334431 its reverse (13443313411), we get a palindrome (24874647842).

The spelling of 11431334431 in words is "eleven billion, four hundred thirty-one million, three hundred thirty-four thousand, four hundred thirty-one".