103681191 has 4 divisors (see below), whose sum is σ = 138241592. Its totient is φ = 69120792.

The previous prime is 103681187. The next prime is 103681211. The reversal of 103681191 is 191186301.

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

It is not a de Polignac number, because 103681191 - 2² = 103681187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103681121) 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 in 3 ways as a sum of consecutive naturals, for example, 17280196 + ... + 17280201.

It is an arithmetic number, because the mean of its divisors is an integer number (34560398).

Almost surely, 2^103681191 is an apocalyptic number.

103681191 is a deficient number, since it is larger than the sum of its proper divisors (34560401).

103681191 is an equidigital number, since it uses as much as digits as its factorization.

103681191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34560400.

The product of its (nonzero) digits is 1296, while the sum is 30.

The square root of 103681191 is about 10182.3961325417. The cubic root of 103681191 is about 469.7859157788.

The spelling of 103681191 in words is "one hundred three million, six hundred eighty-one thousand, one hundred ninety-one".