13210891 has 2 divisors, whose sum is σ = 13210892. Its totient is φ = 13210890.

The previous prime is 13210889. The next prime is 13210903. The reversal of 13210891 is 19801231.

It is a weak prime.

It is an emirp because it is prime and its reverse (19801231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13210891 - 2¹ = 13210889 is a prime.

Together with 13210889, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (13210801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6605445 + 6605446.

It is an arithmetic number, because the mean of its divisors is an integer number (6605446).

Almost surely, 2^13210891 is an apocalyptic number.

13210891 is a deficient number, since it is larger than the sum of its proper divisors (1).

13210891 is an equidigital number, since it uses as much as digits as its factorization.

13210891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 13210891 is about 3634.6789404293. The cubic root of 13210891 is about 236.3981298100.

The spelling of 13210891 in words is "thirteen million, two hundred ten thousand, eight hundred ninety-one".