243134033 has 4 divisors (see below), whose sum is σ = 246558528. Its totient is φ = 239709540.

The previous prime is 243134011. The next prime is 243134041. The reversal of 243134033 is 330431342.

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 a de Polignac number, because none of the positive numbers 2^k-243134033 is a prime.

It is a super-2 number, since 2×243134033² = 118228316005690178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243134053) 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, 1712141 + ... + 1712282.

It is an arithmetic number, because the mean of its divisors is an integer number (61639632).

Almost surely, 2^243134033 is an apocalyptic number.

It is an amenable number.

243134033 is a deficient number, since it is larger than the sum of its proper divisors (3424495).

243134033 is an equidigital number, since it uses as much as digits as its factorization.

243134033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3424494.

The product of its (nonzero) digits is 2592, while the sum is 23.

The square root of 243134033 is about 15592.7557859411. The cubic root of 243134033 is about 624.1398582863.

Adding to 243134033 its reverse (330431342), we get a palindrome (573565375).

The spelling of 243134033 in words is "two hundred forty-three million, one hundred thirty-four thousand, thirty-three".