13431112181442 has 54 divisors (see below), whose sum is σ = 29734699386483. Its totient is φ = 4381542866664.

The previous prime is 13431112181437. The next prime is 13431112181503. The reversal of 13431112181442 is 24418121113431.

13431112181442 is a `hidden beast` number, since 1 + 3 + 4 + 3 + 11 + 121 + 81 + 442 = 666.

13431112181442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 6715556090721 + 6715556090721 = 2591439^2 + 2591439^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=2591439.

It is a junction number, because it is equal to n+sod(n) for n = 13431112181397 and 13431112181406.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 730776609 + ... + 730794987.

Almost surely, 2^{13431112181442} is an apocalyptic number.

13431112181442 is an abundant number, since it is smaller than the sum of its proper divisors (16303587205041).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13431112181442 is an frugal number, since it uses more digits than its factorization.

13431112181442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36860 (or 18431 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

Adding to 13431112181442 its reverse (24418121113431), we get a palindrome (37849233294873).

The spelling of 13431112181442 in words is "thirteen trillion, four hundred thirty-one billion, one hundred twelve million, one hundred eighty-one thousand, four hundred forty-two".