13231332405 has 24 divisors (see below), whose sum is σ = 22939633080. Its totient is φ = 7055072640.

The previous prime is 13231332353. The next prime is 13231332409. The reversal of 13231332405 is 50423313231.

13231332405 is a `hidden beast` number, since 1 + 323 + 1 + 332 + 4 + 0 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 516289284 + 12715043121 = 22722^2 + 112761^2 .

It is not a de Polignac number, because 13231332405 - 2⁶ = 13231332341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231332409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 176131 + ... + 239759.

It is an arithmetic number, because the mean of its divisors is an integer number (955818045).

Almost surely, 2^13231332405 is an apocalyptic number.

13231332405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13231332405 is a deficient number, since it is larger than the sum of its proper divisors (9708300675).

13231332405 is a wasteful number, since it uses less digits than its factorization.

13231332405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68261 (or 68258 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

Adding to 13231332405 its reverse (50423313231), we get a palindrome (63654645636).

The spelling of 13231332405 in words is "thirteen billion, two hundred thirty-one million, three hundred thirty-two thousand, four hundred five".