11431332111421 has 32 divisors (see below), whose sum is σ = 12291616696320. Its totient is φ = 10606980884544.

The previous prime is 11431332111403. The next prime is 11431332111431. The reversal of 11431332111421 is 12411123313411.

11431332111421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11431332111421 - 2⁷ = 11431332111293 is a prime.

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 11431332111421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11431332111431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39410695 + ... + 39699691.

It is an arithmetic number, because the mean of its divisors is an integer number (384113021760).

Almost surely, 2^{11431332111421} is an apocalyptic number.

It is an amenable number.

11431332111421 is a deficient number, since it is larger than the sum of its proper divisors (860284584899).

11431332111421 is a wasteful number, since it uses less digits than its factorization.

11431332111421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289465.

The product of its digits is 1728, while the sum is 28.

Adding to 11431332111421 its reverse (12411123313411), we get a palindrome (23842455424832).

The spelling of 11431332111421 in words is "eleven trillion, four hundred thirty-one billion, three hundred thirty-two million, one hundred eleven thousand, four hundred twenty-one".