100191103 has 2 divisors, whose sum is σ = 100191104. Its totient is φ = 100191102.

The previous prime is 100191089. The next prime is 100191121. The reversal of 100191103 is 301191001.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (301191001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100191103 - 2¹³ = 100182911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100191173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50095551 + 50095552.

It is an arithmetic number, because the mean of its divisors is an integer number (50095552).

Almost surely, 2^100191103 is an apocalyptic number.

100191103 is a deficient number, since it is larger than the sum of its proper divisors (1).

100191103 is an equidigital number, since it uses as much as digits as its factorization.

100191103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27, while the sum is 16.

The square root of 100191103 is about 10009.5505893122. The cubic root of 100191103 is about 464.4543690641.

The spelling of 100191103 in words is "one hundred million, one hundred ninety-one thousand, one hundred three".