113423404421 has 4 divisors (see below), whose sum is σ = 113425725600. Its totient is φ = 113421083244.

The previous prime is 113423404379. The next prime is 113423404447. The reversal of 113423404421 is 124404324311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 113423404421 - 2²² = 113419210117 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 (113423403421) 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 3 ways as a sum of consecutive naturals, for example, 1085681 + ... + 1185558.

It is an arithmetic number, because the mean of its divisors is an integer number (28356431400).

Almost surely, 2^113423404421 is an apocalyptic number.

It is an amenable number.

113423404421 is a deficient number, since it is larger than the sum of its proper divisors (2321179).

113423404421 is an equidigital number, since it uses as much as digits as its factorization.

113423404421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2321178.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 113423404421 its reverse (124404324311), we get a palindrome (237827728732).

The spelling of 113423404421 in words is "one hundred thirteen billion, four hundred twenty-three million, four hundred four thousand, four hundred twenty-one".