2003191 has 2 divisors, whose sum is σ = 2003192. Its totient is φ = 2003190.

The previous prime is 2003159. The next prime is 2003201. The reversal of 2003191 is 1913002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2003191 - 2⁵ = 2003159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2003591) 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, 1001595 + 1001596.

It is an arithmetic number, because the mean of its divisors is an integer number (1001596).

2^2003191 is an apocalyptic number.

2003191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2003191 is an equidigital number, since it uses as much as digits as its factorization.

2003191 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2003191 is about 1415.3413015948. The cubic root of 2003191 is about 126.0590761858.

Adding to 2003191 its reverse (1913002), we get a palindrome (3916193).

The spelling of 2003191 in words is "two million, three thousand, one hundred ninety-one".