13231232191 has 2 divisors, whose sum is σ = 13231232192. Its totient is φ = 13231232190.

The previous prime is 13231232173. The next prime is 13231232269. The reversal of 13231232191 is 19123213231.

13231232191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13231232191 - 2⁹ = 13231231679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13231232111) 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, 6615616095 + 6615616096.

It is an arithmetic number, because the mean of its divisors is an integer number (6615616096).

Almost surely, 2^13231232191 is an apocalyptic number.

13231232191 is a deficient number, since it is larger than the sum of its proper divisors (1).

13231232191 is an equidigital number, since it uses as much as digits as its factorization.

13231232191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 28.

The spelling of 13231232191 in words is "thirteen billion, two hundred thirty-one million, two hundred thirty-two thousand, one hundred ninety-one".