113242013 has 4 divisors (see below), whose sum is σ = 117146940. Its totient is φ = 109337088.

The previous prime is 113242007. The next prime is 113242021. The reversal of 113242013 is 310242311.

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

It can be written as a sum of positive squares in 2 ways, for example, as 84971524 + 28270489 = 9218^2 + 5317^2 .

It is a cyclic number.

It is not a de Polignac number, because 113242013 - 2⁸ = 113241757 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113241982 and 113242000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113242043) 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, 1952420 + ... + 1952477.

It is an arithmetic number, because the mean of its divisors is an integer number (29286735).

Almost surely, 2^113242013 is an apocalyptic number.

It is an amenable number.

113242013 is a deficient number, since it is larger than the sum of its proper divisors (3904927).

113242013 is an equidigital number, since it uses as much as digits as its factorization.

113242013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3904926.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 113242013 is about 10641.5230582845. The cubic root of 113242013 is about 483.8037091357.

Adding to 113242013 its reverse (310242311), we get a palindrome (423484324).

The spelling of 113242013 in words is "one hundred thirteen million, two hundred forty-two thousand, thirteen".