113044440013 has 4 divisors (see below), whose sum is σ = 113176966588. Its totient is φ = 112911913440.

The previous prime is 113044439993. The next prime is 113044440017. The reversal of 113044440013 is 310044440311.

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 29631491044 + 83412948969 = 172138^2 + 288813^2 .

It is a cyclic number.

It is not a de Polignac number, because 113044440013 - 2²⁹ = 112507569101 is a prime.

It is a super-3 number, since 3×113044440013³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 113044440013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113044440017) 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, 66262008 + ... + 66263713.

It is an arithmetic number, because the mean of its divisors is an integer number (28294241647).

Almost surely, 2^113044440013 is an apocalyptic number.

It is an amenable number.

113044440013 is a deficient number, since it is larger than the sum of its proper divisors (132526575).

113044440013 is an equidigital number, since it uses as much as digits as its factorization.

113044440013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132526574.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 113044440013 its reverse (310044440311), we get a palindrome (423088880324).

The spelling of 113044440013 in words is "one hundred thirteen billion, forty-four million, four hundred forty thousand, thirteen".