113243505 has 8 divisors (see below), whose sum is σ = 181189632. Its totient is φ = 60396528.

The previous prime is 113243503. The next prime is 113243531. The reversal of 113243505 is 505342311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 113243505 - 2¹ = 113243503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (113243503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3774769 + ... + 3774798.

It is an arithmetic number, because the mean of its divisors is an integer number (22648704).

Almost surely, 2^113243505 is an apocalyptic number.

113243505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

113243505 is a deficient number, since it is larger than the sum of its proper divisors (67946127).

113243505 is an equidigital number, since it uses as much as digits as its factorization.

113243505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7549575.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 113243505 is about 10641.5931608007. The cubic root of 113243505 is about 483.8058338829.

Adding to 113243505 its reverse (505342311), we get a palindrome (618585816).

The spelling of 113243505 in words is "one hundred thirteen million, two hundred forty-three thousand, five hundred five".