243533133 has 12 divisors (see below), whose sum is σ = 351933660. Its totient is φ = 162279936.

The previous prime is 243533099. The next prime is 243533159. The reversal of 243533133 is 331335342.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 224190729 + 19342404 = 14973^2 + 4398^2 .

It is not a de Polignac number, because 243533133 - 2¹⁶ = 243467597 is a prime.

It is a super-3 number, since 3×243533133³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243533097 and 243533106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243533033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19863 + ... + 29691.

It is an arithmetic number, because the mean of its divisors is an integer number (29327805).

Almost surely, 2^243533133 is an apocalyptic number.

It is an amenable number.

243533133 is a deficient number, since it is larger than the sum of its proper divisors (108400527).

243533133 is a wasteful number, since it uses less digits than its factorization.

243533133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12588 (or 12585 counting only the distinct ones).

The product of its digits is 9720, while the sum is 27.

The square root of 243533133 is about 15605.5481480145. The cubic root of 243533133 is about 624.4811762609.

Adding to 243533133 its reverse (331335342), we get a palindrome (574868475).

The spelling of 243533133 in words is "two hundred forty-three million, five hundred thirty-three thousand, one hundred thirty-three".