243380033 has 8 divisors (see below), whose sum is σ = 263619048. Its totient is φ = 223357824.

The previous prime is 243380009. The next prime is 243380047. The reversal of 243380033 is 330083342.

It can be written as a sum of positive squares in 4 ways, for example, as 15460624 + 227919409 = 3932^2 + 15097^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243380033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243379984 and 243380011.

It is not an unprimeable number, because it can be changed into a prime (243380933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51860 + ... + 56357.

It is an arithmetic number, because the mean of its divisors is an integer number (32952381).

Almost surely, 2^243380033 is an apocalyptic number.

It is an amenable number.

243380033 is a deficient number, since it is larger than the sum of its proper divisors (20239015).

243380033 is a wasteful number, since it uses less digits than its factorization.

243380033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108403.

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 243380033 is about 15600.6420701201. The cubic root of 243380033 is about 624.3502863228.

The spelling of 243380033 in words is "two hundred forty-three million, three hundred eighty thousand, thirty-three".