13231331205 has 16 divisors (see below), whose sum is σ = 21215473344. Its totient is φ = 7041595520.

The previous prime is 13231331153. The next prime is 13231331213. The reversal of 13231331205 is 50213313231.

It is not a de Polignac number, because 13231331205 - 2⁷ = 13231331077 is a prime.

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, 937416 + ... + 951425.

It is an arithmetic number, because the mean of its divisors is an integer number (1325967084).

Almost surely, 2^13231331205 is an apocalyptic number.

13231331205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13231331205 is a deficient number, since it is larger than the sum of its proper divisors (7984142139).

13231331205 is a wasteful number, since it uses less digits than its factorization.

13231331205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1889316.

The product of its (nonzero) digits is 1620, while the sum is 24.

Adding to 13231331205 its reverse (50213313231), we get a palindrome (63444644436).

It can be divided in two parts, 1323 and 1331205, that added together give a triangular number (1332528 = T₁₆₃₂).

The spelling of 13231331205 in words is "thirteen billion, two hundred thirty-one million, three hundred thirty-one thousand, two hundred five".