100001030191 has 2 divisors, whose sum is σ = 100001030192. Its totient is φ = 100001030190.

The previous prime is 100001030177. The next prime is 100001030237. The reversal of 100001030191 is 191030100001.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100001030191 - 2⁹ = 100001029679 is a prime.

It is a super-2 number, since 2×100001030191² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100001030141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50000515095 + 50000515096.

It is an arithmetic number, because the mean of its divisors is an integer number (50000515096).

Almost surely, 2^100001030191 is an apocalyptic number.

100001030191 is a deficient number, since it is larger than the sum of its proper divisors (1).

100001030191 is an equidigital number, since it uses as much as digits as its factorization.

100001030191 is an evil number, because the sum of its binary digits is even.

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

Adding to 100001030191 its reverse (191030100001), we get a palindrome (291031130192).

The spelling of 100001030191 in words is "one hundred billion, one million, thirty thousand, one hundred ninety-one".