13531344405 has 32 divisors (see below), whose sum is σ = 22069998720. Its totient is φ = 7076908800.

The previous prime is 13531344397. The next prime is 13531344419. The reversal of 13531344405 is 50444313531.

It is not a de Polignac number, because 13531344405 - 2³ = 13531344397 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2309730 + ... + 2315580.

It is an arithmetic number, because the mean of its divisors is an integer number (689687460).

Almost surely, 2^13531344405 is an apocalyptic number.

13531344405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13531344405 is a deficient number, since it is larger than the sum of its proper divisors (8538654315).

13531344405 is a wasteful number, since it uses less digits than its factorization.

13531344405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8821.

The product of its (nonzero) digits is 43200, while the sum is 33.

Adding to 13531344405 its reverse (50444313531), we get a palindrome (63975657936).

The spelling of 13531344405 in words is "thirteen billion, five hundred thirty-one million, three hundred forty-four thousand, four hundred five".