234233021 has 16 divisors (see below), whose sum is σ = 273207168. Its totient is φ = 198451200.

The previous prime is 234233017. The next prime is 234233053. The reversal of 234233021 is 120332432.

It is not a de Polignac number, because 234233021 - 2² = 234233017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 234232984 and 234233002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234233011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13181 + ... + 25341.

It is an arithmetic number, because the mean of its divisors is an integer number (17075448).

Almost surely, 2^234233021 is an apocalyptic number.

It is an amenable number.

234233021 is a deficient number, since it is larger than the sum of its proper divisors (38974147).

234233021 is a wasteful number, since it uses less digits than its factorization.

234233021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12292.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 234233021 is about 15304.6731752102. The cubic root of 234233021 is about 616.4284955418.

Adding to 234233021 its reverse (120332432), we get a palindrome (354565453).

The spelling of 234233021 in words is "two hundred thirty-four million, two hundred thirty-three thousand, twenty-one".