233430133 has 4 divisors (see below), whose sum is σ = 233462880. Its totient is φ = 233397388.

The previous prime is 233430107. The next prime is 233430157. The reversal of 233430133 is 331034332.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-233430133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233430173) 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, 643 + ... + 21616.

It is an arithmetic number, because the mean of its divisors is an integer number (58365720).

Almost surely, 2^233430133 is an apocalyptic number.

It is an amenable number.

233430133 is a deficient number, since it is larger than the sum of its proper divisors (32747).

233430133 is a wasteful number, since it uses less digits than its factorization.

233430133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32746.

The product of its (nonzero) digits is 1944, while the sum is 22.

The square root of 233430133 is about 15278.4205008240. The cubic root of 233430133 is about 615.7233720613.

Adding to 233430133 its reverse (331034332), we get a palindrome (564464465).

The spelling of 233430133 in words is "two hundred thirty-three million, four hundred thirty thousand, one hundred thirty-three".