234330021 has 48 divisors (see below), whose sum is σ = 366824640. Its totient is φ = 143700480.

The previous prime is 234330011. The next prime is 234330029. The reversal of 234330021 is 120033432.

234330021 is a `hidden beast` number, since 2 + 343 + 300 + 21 = 666.

It is not a de Polignac number, because 234330021 - 2¹⁵ = 234297253 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 234329976 and 234330003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234330029) 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 47 ways as a sum of consecutive naturals, for example, 1294551 + ... + 1294731.

It is an arithmetic number, because the mean of its divisors is an integer number (7642180).

Almost surely, 2^234330021 is an apocalyptic number.

It is an amenable number.

234330021 is a deficient number, since it is larger than the sum of its proper divisors (132494619).

234330021 is a wasteful number, since it uses less digits than its factorization.

234330021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 234330021 is about 15307.8418139201. The cubic root of 234330021 is about 616.5135750805.

Adding to 234330021 its reverse (120033432), we get a palindrome (354363453).

The spelling of 234330021 in words is "two hundred thirty-four million, three hundred thirty thousand, twenty-one".