113443013 has 4 divisors (see below), whose sum is σ = 113464428. Its totient is φ = 113421600.

The previous prime is 113442991. The next prime is 113443021. The reversal of 113443013 is 310344311.

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 95609284 + 17833729 = 9778^2 + 4223^2 .

It is a cyclic number.

It is not a de Polignac number, because 113443013 - 2⁸ = 113442757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113443063) 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, 3713 + ... + 15513.

It is an arithmetic number, because the mean of its divisors is an integer number (28366107).

Almost surely, 2^113443013 is an apocalyptic number.

It is an amenable number.

113443013 is a deficient number, since it is larger than the sum of its proper divisors (21415).

113443013 is an equidigital number, since it uses as much as digits as its factorization.

113443013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21414.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 113443013 is about 10650.9630081040. The cubic root of 113443013 is about 484.0897839607.

Adding to 113443013 its reverse (310344311), we get a palindrome (423787324).

The spelling of 113443013 in words is "one hundred thirteen million, four hundred forty-three thousand, thirteen".