113243004421 has 4 divisors (see below), whose sum is σ = 113245771500. Its totient is φ = 113240237344.

The previous prime is 113243004389. The next prime is 113243004443. The reversal of 113243004421 is 124400342311.

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 47978083521 + 65264920900 = 219039^2 + 255470^2 .

It is a cyclic number.

It is not a de Polignac number, because 113243004421 - 2⁵ = 113243004389 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 (113243004461) 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, 1321216 + ... + 1404313.

It is an arithmetic number, because the mean of its divisors is an integer number (28311442875).

Almost surely, 2^113243004421 is an apocalyptic number.

It is an amenable number.

113243004421 is a deficient number, since it is larger than the sum of its proper divisors (2767079).

113243004421 is an equidigital number, since it uses as much as digits as its factorization.

113243004421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2767078.

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

Adding to 113243004421 its reverse (124400342311), we get a palindrome (237643346732).

The spelling of 113243004421 in words is "one hundred thirteen billion, two hundred forty-three million, four thousand, four hundred twenty-one".