13231320172211 has 2 divisors, whose sum is σ = 13231320172212. Its totient is φ = 13231320172210.

The previous prime is 13231320172193. The next prime is 13231320172261. The reversal of 13231320172211 is 11227102313231.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13231320172211 is a prime.

It is not a weakly prime, because it can be changed into another prime (13231320172261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6615660086105 + 6615660086106.

It is an arithmetic number, because the mean of its divisors is an integer number (6615660086106).

Almost surely, 2^{13231320172211} is an apocalyptic number.

13231320172211 is a deficient number, since it is larger than the sum of its proper divisors (1).

13231320172211 is an equidigital number, since it uses as much as digits as its factorization.

13231320172211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 29.

Adding to 13231320172211 its reverse (11227102313231), we get a palindrome (24458422485442).

The spelling of 13231320172211 in words is "thirteen trillion, two hundred thirty-one billion, three hundred twenty million, one hundred seventy-two thousand, two hundred eleven".