233434021 has 8 divisors (see below), whose sum is σ = 255688920. Its totient is φ = 212126208.

The previous prime is 233433997. The next prime is 233434039. The reversal of 233434021 is 120434332.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 27941796 + 205492225 = 5286^2 + 14335^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 233434021 - 2¹¹ = 233431973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 233433983 and 233434001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233432021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236256 + ... + 237241.

It is an arithmetic number, because the mean of its divisors is an integer number (31961115).

Almost surely, 2^233434021 is an apocalyptic number.

It is an amenable number.

233434021 is a deficient number, since it is larger than the sum of its proper divisors (22254899).

233434021 is a wasteful number, since it uses less digits than its factorization.

233434021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473543.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 233434021 is about 15278.5477385778. The cubic root of 233434021 is about 615.7267905276.

Adding to 233434021 its reverse (120434332), we get a palindrome (353868353).

The spelling of 233434021 in words is "two hundred thirty-three million, four hundred thirty-four thousand, twenty-one".