13531321105 has 32 divisors (see below), whose sum is σ = 18113708160. Its totient is φ = 9643484160.

The previous prime is 13531321087. The next prime is 13531321109. The reversal of 13531321105 is 50112313531.

It is not a de Polignac number, because 13531321105 - 2⁷ = 13531320977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13531321105.

It is not an unprimeable number, because it can be changed into a prime (13531321109) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2227282 + ... + 2233348.

It is an arithmetic number, because the mean of its divisors is an integer number (566053380).

Almost surely, 2^13531321105 is an apocalyptic number.

It is an amenable number.

13531321105 is a deficient number, since it is larger than the sum of its proper divisors (4582387055).

13531321105 is a wasteful number, since it uses less digits than its factorization.

13531321105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7489.

The product of its (nonzero) digits is 1350, while the sum is 25.

Adding to 13531321105 its reverse (50112313531), we get a palindrome (63643634636).

The spelling of 13531321105 in words is "thirteen billion, five hundred thirty-one million, three hundred twenty-one thousand, one hundred five".