113423421 has 4 divisors (see below), whose sum is σ = 151231232. Its totient is φ = 75615612.

The previous prime is 113423417. The next prime is 113423441. The reversal of 113423421 is 124324311.

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, and also an emirpimes, since its reverse is a distinct semiprime: 124324311 = 3 ⋅41441437.

It is not a de Polignac number, because 113423421 - 2² = 113423417 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 (113423441) 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, 18903901 + ... + 18903906.

It is an arithmetic number, because the mean of its divisors is an integer number (37807808).

Almost surely, 2^113423421 is an apocalyptic number.

It is an amenable number.

113423421 is a deficient number, since it is larger than the sum of its proper divisors (37807811).

113423421 is an equidigital number, since it uses as much as digits as its factorization.

113423421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37807810.

The product of its digits is 576, while the sum is 21.

The square root of 113423421 is about 10650.0432393488. The cubic root of 113423421 is about 484.0619143639.

Adding to 113423421 its reverse (124324311), we get a palindrome (237747732).

The spelling of 113423421 in words is "one hundred thirteen million, four hundred twenty-three thousand, four hundred twenty-one".