3191191 has 2 divisors, whose sum is σ = 3191192. Its totient is φ = 3191190.

The previous prime is 3191179. The next prime is 3191197. The reversal of 3191191 is 1911913.

3191191 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 a de Polignac number, because none of the positive numbers 2^k-3191191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3191197) 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, 1595595 + 1595596.

It is an arithmetic number, because the mean of its divisors is an integer number (1595596).

Almost surely, 2^3191191 is an apocalyptic number.

3191191 is a deficient number, since it is larger than the sum of its proper divisors (1).

3191191 is an equidigital number, since it uses as much as digits as its factorization.

3191191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 243, while the sum is 25.

The square root of 3191191 is about 1786.3904948247. The cubic root of 3191191 is about 147.2259163716.

The spelling of 3191191 in words is "three million, one hundred ninety-one thousand, one hundred ninety-one".