113661355 has 4 divisors (see below), whose sum is σ = 136393632. Its totient is φ = 90929080.

The previous prime is 113661349. The next prime is 113661403. The reversal of 113661355 is 553166311.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 113661355 - 2⁵ = 113661323 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11366131 + ... + 11366140.

It is an arithmetic number, because the mean of its divisors is an integer number (34098408).

Almost surely, 2^113661355 is an apocalyptic number.

113661355 is a deficient number, since it is larger than the sum of its proper divisors (22732277).

113661355 is an equidigital number, since it uses as much as digits as its factorization.

113661355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22732276.

The product of its digits is 8100, while the sum is 31.

The square root of 113661355 is about 10661.2079521975. The cubic root of 113661355 is about 484.4001582770.

It can be divided in two parts, 11366 and 1355, that added together give a palindrome (12721).

The spelling of 113661355 in words is "one hundred thirteen million, six hundred sixty-one thousand, three hundred fifty-five".