113721166 has 16 divisors (see below), whose sum is σ = 185333904. Its totient is φ = 52020864.

The previous prime is 113721161. The next prime is 113721169. The reversal of 113721166 is 661127311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113721161) 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 7 ways as a sum of consecutive naturals, for example, 16416 + ... + 22291.

It is an arithmetic number, because the mean of its divisors is an integer number (11583369).

Almost surely, 2^113721166 is an apocalyptic number.

113721166 is a deficient number, since it is larger than the sum of its proper divisors (71612738).

113721166 is a wasteful number, since it uses less digits than its factorization.

113721166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38835.

The product of its digits is 1512, while the sum is 28.

The square root of 113721166 is about 10664.0126594073. The cubic root of 113721166 is about 484.4851105676.

Adding to 113721166 its reverse (661127311), we get a palindrome (774848477).

The spelling of 113721166 in words is "one hundred thirteen million, seven hundred twenty-one thousand, one hundred sixty-six".