113720911 has 4 divisors (see below), whose sum is σ = 114193024. Its totient is φ = 113248800.

The previous prime is 113720903. The next prime is 113720917. The reversal of 113720911 is 119027311.

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 113720911 - 2³ = 113720903 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 (113720917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235695 + ... + 236176.

It is an arithmetic number, because the mean of its divisors is an integer number (28548256).

Almost surely, 2^113720911 is an apocalyptic number.

113720911 is a deficient number, since it is larger than the sum of its proper divisors (472113).

113720911 is an equidigital number, since it uses as much as digits as its factorization.

113720911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472112.

The product of its (nonzero) digits is 378, while the sum is 25.

The square root of 113720911 is about 10664.0007033008. Note that the first 3 decimals coincide. The cubic root of 113720911 is about 484.4847484427.

The spelling of 113720911 in words is "one hundred thirteen million, seven hundred twenty thousand, nine hundred eleven".