107812891 has 4 divisors (see below), whose sum is σ = 112500432. Its totient is φ = 103125352.

The previous prime is 107812889. The next prime is 107812919. The reversal of 107812891 is 198218701.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 198218701 = 59 ⋅3359639.

It is a cyclic number.

It is not a de Polignac number, because 107812891 - 2¹ = 107812889 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 107812891.

It is not an unprimeable number, because it can be changed into a prime (107812871) 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, 2343736 + ... + 2343781.

It is an arithmetic number, because the mean of its divisors is an integer number (28125108).

Almost surely, 2^107812891 is an apocalyptic number.

107812891 is a deficient number, since it is larger than the sum of its proper divisors (4687541).

107812891 is an equidigital number, since it uses as much as digits as its factorization.

107812891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4687540.

The product of its (nonzero) digits is 8064, while the sum is 37.

The square root of 107812891 is about 10383.2986569779. The cubic root of 107812891 is about 475.9451408542.

The spelling of 107812891 in words is "one hundred seven million, eight hundred twelve thousand, eight hundred ninety-one".