13531132205 has 4 divisors (see below), whose sum is σ = 16237358652. Its totient is φ = 10824905760.

The previous prime is 13531132183. The next prime is 13531132211. The reversal of 13531132205 is 50223113531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50223113531 = 1321 ⋅38019011.

It can be written as a sum of positive squares in 2 ways, for example, as 10375052164 + 3156080041 = 101858^2 + 56179^2 .

It is not a de Polignac number, because 13531132205 - 2⁶ = 13531132141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1353113216 + ... + 1353113225.

It is an arithmetic number, because the mean of its divisors is an integer number (4059339663).

Almost surely, 2^13531132205 is an apocalyptic number.

It is an amenable number.

13531132205 is a deficient number, since it is larger than the sum of its proper divisors (2706226447).

13531132205 is an equidigital number, since it uses as much as digits as its factorization.

13531132205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2706226446.

The product of its (nonzero) digits is 2700, while the sum is 26.

Adding to 13531132205 its reverse (50223113531), we get a palindrome (63754245736).

The spelling of 13531132205 in words is "thirteen billion, five hundred thirty-one million, one hundred thirty-two thousand, two hundred five".