203201031191 has 2 divisors, whose sum is σ = 203201031192. Its totient is φ = 203201031190.

The previous prime is 203201031169. The next prime is 203201031199. The reversal of 203201031191 is 191130102302.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203201031191 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203201031199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101600515595 + 101600515596.

It is an arithmetic number, because the mean of its divisors is an integer number (101600515596).

Almost surely, 2^203201031191 is an apocalyptic number.

203201031191 is a deficient number, since it is larger than the sum of its proper divisors (1).

203201031191 is an equidigital number, since it uses as much as digits as its factorization.

203201031191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 23.

Adding to 203201031191 its reverse (191130102302), we get a palindrome (394331133493).

The spelling of 203201031191 in words is "two hundred three billion, two hundred one million, thirty-one thousand, one hundred ninety-one".