13431135540 has 48 divisors (see below), whose sum is σ = 37979544960. Its totient is φ = 3546172800.

The previous prime is 13431135493. The next prime is 13431135559. The reversal of 13431135540 is 4553113431.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 13431135498 and 13431135507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1102120 + ... + 1114239.

It is an arithmetic number, because the mean of its divisors is an integer number (791240520).

Almost surely, 2^13431135540 is an apocalyptic number.

13431135540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13431135540 is an abundant number, since it is smaller than the sum of its proper divisors (24548409420).

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

13431135540 is a wasteful number, since it uses less digits than its factorization.

13431135540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2216472 (or 2216470 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 13431135540 its reverse (4553113431), we get a palindrome (17984248971).

The spelling of 13431135540 in words is "thirteen billion, four hundred thirty-one million, one hundred thirty-five thousand, five hundred forty".