13442431131 has 24 divisors (see below), whose sum is σ = 20996449344. Its totient is φ = 8255005440.

The previous prime is 13442431099. The next prime is 13442431139. The reversal of 13442431131 is 13113424431.

13442431131 is a `hidden beast` number, since 1 + 344 + 2 + 4 + 311 + 3 + 1 = 666.

13442431131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13442431131 - 2⁵ = 13442431099 is a prime.

It is a super-2 number, since 2×13442431131² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13442431095 and 13442431104.

It is not an unprimeable number, because it can be changed into a prime (13442431139) 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 23 ways as a sum of consecutive naturals, for example, 927480 + ... + 941861.

It is an arithmetic number, because the mean of its divisors is an integer number (874852056).

Almost surely, 2^13442431131 is an apocalyptic number.

13442431131 is a deficient number, since it is larger than the sum of its proper divisors (7554018213).

13442431131 is a wasteful number, since it uses less digits than its factorization.

13442431131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1869411 (or 1869408 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

Adding to 13442431131 its reverse (13113424431), we get a palindrome (26555855562).

The spelling of 13442431131 in words is "thirteen billion, four hundred forty-two million, four hundred thirty-one thousand, one hundred thirty-one".