11121310442431 has 16 divisors (see below), whose sum is σ = 13379217292800. Its totient is φ = 9030705437088.

The previous prime is 11121310442401. The next prime is 11121310442447. The reversal of 11121310442431 is 13424401312111.

11121310442431 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 11121310442431 - 2¹⁷ = 11121310311359 is a prime.

It is a super-3 number, since 3×11121310442431³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 11121310442431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121310442401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9002790 + ... + 10163308.

It is an arithmetic number, because the mean of its divisors is an integer number (836201080800).

Almost surely, 2^{11121310442431} is an apocalyptic number.

11121310442431 is a deficient number, since it is larger than the sum of its proper divisors (2257906850369).

11121310442431 is a wasteful number, since it uses less digits than its factorization.

11121310442431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232598.

The product of its (nonzero) digits is 2304, while the sum is 28.

Adding to 11121310442431 its reverse (13424401312111), we get a palindrome (24545711754542).

The spelling of 11121310442431 in words is "eleven trillion, one hundred twenty-one billion, three hundred ten million, four hundred forty-two thousand, four hundred thirty-one".