32191 has 2 divisors, whose sum is σ = 32192. Its totient is φ = 32190.

The previous prime is 32189. The next prime is 32203. The reversal of 32191 is 19123.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 32191 - 2¹ = 32189 is a prime.

Together with 32189, it forms a pair of twin primes.

It is an Ulam number.

It is equal to p₃₄₅₄ and since 32191 and 3454 have the same sum of digits, it is a Honaker prime.

It is a nialpdrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16095 + 16096.

It is an arithmetic number, because the mean of its divisors is an integer number (16096).

2³²¹⁹¹ is an apocalyptic number.

32191 is a deficient number, since it is larger than the sum of its proper divisors (1).

32191 is an equidigital number, since it uses as much as digits as its factorization.

32191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54, while the sum is 16.

The square root of 32191 is about 179.4185051771. The cubic root of 32191 is about 31.8110611153.

The spelling of 32191 in words is "thirty-two thousand, one hundred ninety-one".