100143191 has 2 divisors, whose sum is σ = 100143192. Its totient is φ = 100143190.

The previous prime is 100143181. The next prime is 100143223. The reversal of 100143191 is 191341001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100143191 - 2²² = 95948887 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100143101) 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, 50071595 + 50071596.

It is an arithmetic number, because the mean of its divisors is an integer number (50071596).

Almost surely, 2^100143191 is an apocalyptic number.

100143191 is a deficient number, since it is larger than the sum of its proper divisors (1).

100143191 is an equidigital number, since it uses as much as digits as its factorization.

100143191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 100143191 is about 10007.1569888755. The cubic root of 100143191 is about 464.3803222836.

Adding to 100143191 its reverse (191341001), we get a palindrome (291484192).

The spelling of 100143191 in words is "one hundred million, one hundred forty-three thousand, one hundred ninety-one".