13531322140 has 48 divisors (see below), whose sum is σ = 32546388672. Its totient is φ = 4629136896.

The previous prime is 13531322111. The next prime is 13531322171. The reversal of 13531322140 is 4122313531.

It is a happy number.

13531322140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 41767 + ... + 169726.

It is an arithmetic number, because the mean of its divisors is an integer number (678049764).

Almost surely, 2^13531322140 is an apocalyptic number.

13531322140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13531322140 is an abundant number, since it is smaller than the sum of its proper divisors (19015066532).

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

13531322140 is a wasteful number, since it uses less digits than its factorization.

13531322140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211966 (or 211964 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 13531322140 its reverse (4122313531), we get a palindrome (17653635671).

The spelling of 13531322140 in words is "thirteen billion, five hundred thirty-one million, three hundred twenty-two thousand, one hundred forty".