113805691 has 2 divisors, whose sum is σ = 113805692. Its totient is φ = 113805690.

The previous prime is 113805661. The next prime is 113805697. The reversal of 113805691 is 196508311.

It is a strong prime.

It is an emirp because it is prime and its reverse (196508311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113805691 - 2⁹ = 113805179 is a prime.

It is not a weakly prime, because it can be changed into another prime (113805697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56902845 + 56902846.

It is an arithmetic number, because the mean of its divisors is an integer number (56902846).

Almost surely, 2^113805691 is an apocalyptic number.

113805691 is a deficient number, since it is larger than the sum of its proper divisors (1).

113805691 is an equidigital number, since it uses as much as digits as its factorization.

113805691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 113805691 is about 10667.9750187184. The cubic root of 113805691 is about 484.6051145028.

It can be divided in two parts, 11380 and 5691, that added together give a palindrome (17071).

The spelling of 113805691 in words is "one hundred thirteen million, eight hundred five thousand, six hundred ninety-one".