233243533 has 4 divisors (see below), whose sum is σ = 233620960. Its totient is φ = 232866108.

The previous prime is 233243503. The next prime is 233243539. The reversal of 233243533 is 335342332.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 233243533 - 2²⁵ = 199689101 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 (233243539) 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, 187785 + ... + 189022.

It is an arithmetic number, because the mean of its divisors is an integer number (58405240).

Almost surely, 2^233243533 is an apocalyptic number.

It is an amenable number.

233243533 is a deficient number, since it is larger than the sum of its proper divisors (377427).

233243533 is an equidigital number, since it uses as much as digits as its factorization.

233243533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377426.

The product of its digits is 19440, while the sum is 28.

The square root of 233243533 is about 15272.3126277588. The cubic root of 233243533 is about 615.5592621295.

Adding to 233243533 its reverse (335342332), we get a palindrome (568585865).

The spelling of 233243533 in words is "two hundred thirty-three million, two hundred forty-three thousand, five hundred thirty-three".