100030191 has 4 divisors (see below), whose sum is σ = 133373592. Its totient is φ = 66686792.

The previous prime is 100030187. The next prime is 100030213. The reversal of 100030191 is 191030001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100030191 - 2² = 100030187 is a prime.

It is a super-2 number, since 2×100030191² = 20012078222992962, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 100030191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100030121) 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 in 3 ways as a sum of consecutive naturals, for example, 16671696 + ... + 16671701.

It is an arithmetic number, because the mean of its divisors is an integer number (33343398).

Almost surely, 2^100030191 is an apocalyptic number.

100030191 is a deficient number, since it is larger than the sum of its proper divisors (33343401).

100030191 is an equidigital number, since it uses as much as digits as its factorization.

100030191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33343400.

The product of its (nonzero) digits is 27, while the sum is 15.

The square root of 100030191 is about 10001.5094360801. The cubic root of 100030191 is about 464.2055900640.

Adding to 100030191 its reverse (191030001), we get a palindrome (291060192).

The spelling of 100030191 in words is "one hundred million, thirty thousand, one hundred ninety-one".