20203310191 has 2 divisors, whose sum is σ = 20203310192. Its totient is φ = 20203310190.

The previous prime is 20203310177. The next prime is 20203310213. The reversal of 20203310191 is 19101330202.

It is an a-pointer prime, because the next prime (20203310213) can be obtained adding 20203310191 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20203310191 - 2¹³ = 20203301999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20203310891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101655095 + 10101655096.

It is an arithmetic number, because the mean of its divisors is an integer number (10101655096).

Almost surely, 2^20203310191 is an apocalyptic number.

20203310191 is a deficient number, since it is larger than the sum of its proper divisors (1).

20203310191 is an equidigital number, since it uses as much as digits as its factorization.

20203310191 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 22.

Adding to 20203310191 its reverse (19101330202), we get a palindrome (39304640393).

The spelling of 20203310191 in words is "twenty billion, two hundred three million, three hundred ten thousand, one hundred ninety-one".