234405231 has 16 divisors (see below), whose sum is σ = 342338400. Its totient is φ = 142005248.

The previous prime is 234405217. The next prime is 234405233. The reversal of 234405231 is 132504432.

It is a cyclic number.

It is not a de Polignac number, because 234405231 - 2⁷ = 234405103 is a prime.

It is a super-2 number, since 2×234405231² = 109891624640326722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234405233) 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, 77766 + ... + 80723.

It is an arithmetic number, because the mean of its divisors is an integer number (21396150).

Almost surely, 2^234405231 is an apocalyptic number.

234405231 is a deficient number, since it is larger than the sum of its proper divisors (107933169).

234405231 is a wasteful number, since it uses less digits than its factorization.

234405231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158538.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 234405231 is about 15310.2982008843. The cubic root of 234405231 is about 616.5795262633.

Adding to 234405231 its reverse (132504432), we get a palindrome (366909663).

The spelling of 234405231 in words is "two hundred thirty-four million, four hundred five thousand, two hundred thirty-one".