100996191 has 24 divisors (see below), whose sum is σ = 154177920. Its totient is φ = 63531216.

The previous prime is 100996163. The next prime is 100996213. The reversal of 100996191 is 191699001.

It is not a de Polignac number, because 100996191 - 2⁶ = 100996127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100994191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47350 + ... + 49436.

It is an arithmetic number, because the mean of its divisors is an integer number (6424080).

Almost surely, 2^100996191 is an apocalyptic number.

100996191 is a deficient number, since it is larger than the sum of its proper divisors (53181729).

100996191 is a wasteful number, since it uses less digits than its factorization.

100996191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2395 (or 2392 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 36.

The square root of 100996191 is about 10049.6861145013. The cubic root of 100996191 is about 465.6950964001.

It can be divided in two parts, 10099 and 6191, that added together give a triangular number (16290 = T₁₈₀).

The spelling of 100996191 in words is "one hundred million, nine hundred ninety-six thousand, one hundred ninety-one".