113661375 has 16 divisors (see below), whose sum is σ = 189133152. Its totient is φ = 60619200.

The previous prime is 113661349. The next prime is 113661403. The reversal of 113661375 is 573166311.

It is a happy number.

It is not a de Polignac number, because 113661375 - 2¹² = 113657279 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 151174 + ... + 151923.

It is an arithmetic number, because the mean of its divisors is an integer number (11820822).

Almost surely, 2^113661375 is an apocalyptic number.

113661375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

113661375 is a deficient number, since it is larger than the sum of its proper divisors (75471777).

113661375 is an equidigital number, since it uses as much as digits as its factorization.

113661375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303115 (or 303105 counting only the distinct ones).

The product of its digits is 11340, while the sum is 33.

The square root of 113661375 is about 10661.2088901775. The cubic root of 113661375 is about 484.4001866889.

The spelling of 113661375 in words is "one hundred thirteen million, six hundred sixty-one thousand, three hundred seventy-five".