234423521 has 4 divisors (see below), whose sum is σ = 244615872. Its totient is φ = 224231172.

The previous prime is 234423509. The next prime is 234423529. The reversal of 234423521 is 125324432.

234423521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 234423521 - 2²² = 230229217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (234423529) 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, 5096141 + ... + 5096186.

It is an arithmetic number, because the mean of its divisors is an integer number (61153968).

Almost surely, 2^234423521 is an apocalyptic number.

It is an amenable number.

234423521 is a deficient number, since it is larger than the sum of its proper divisors (10192351).

234423521 is a wasteful number, since it uses less digits than its factorization.

234423521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10192350.

The product of its digits is 5760, while the sum is 26.

The square root of 234423521 is about 15310.8954996107. The cubic root of 234423521 is about 616.5955625184.

Adding to 234423521 its reverse (125324432), we get a palindrome (359747953).

The spelling of 234423521 in words is "two hundred thirty-four million, four hundred twenty-three thousand, five hundred twenty-one".