13043506391 has 2 divisors, whose sum is σ = 13043506392. Its totient is φ = 13043506390.

The previous prime is 13043506331. The next prime is 13043506397. The reversal of 13043506391 is 19360534031.

13043506391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13043506391 - 2¹⁴ = 13043490007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13043506397) 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, 6521753195 + 6521753196.

It is an arithmetic number, because the mean of its divisors is an integer number (6521753196).

Almost surely, 2^13043506391 is an apocalyptic number.

13043506391 is a deficient number, since it is larger than the sum of its proper divisors (1).

13043506391 is an equidigital number, since it uses as much as digits as its factorization.

13043506391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 35.

The spelling of 13043506391 in words is "thirteen billion, forty-three million, five hundred six thousand, three hundred ninety-one".