113343661 has 4 divisors (see below), whose sum is σ = 115264800. Its totient is φ = 111422524.

The previous prime is 113343647. The next prime is 113343677. The reversal of 113343661 is 166343311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 113343661 - 2¹⁵ = 113310893 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 (113343631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 960481 + ... + 960598.

It is an arithmetic number, because the mean of its divisors is an integer number (28816200).

Almost surely, 2^113343661 is an apocalyptic number.

It is an amenable number.

113343661 is a deficient number, since it is larger than the sum of its proper divisors (1921139).

113343661 is an equidigital number, since it uses as much as digits as its factorization.

113343661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1921138.

The product of its digits is 3888, while the sum is 28.

The square root of 113343661 is about 10646.2979950779. The cubic root of 113343661 is about 483.9484227192.

Adding to 113343661 its reverse (166343311), we get a palindrome (279686972).

The spelling of 113343661 in words is "one hundred thirteen million, three hundred forty-three thousand, six hundred sixty-one".