243405433 has 16 divisors (see below), whose sum is σ = 256340736. Its totient is φ = 230912640.

The previous prime is 243405431. The next prime is 243405443. The reversal of 243405433 is 334504342.

It is a cyclic number.

It is not a de Polignac number, because 243405433 - 2¹ = 243405431 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243405431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208710 + ... + 209872.

It is an arithmetic number, because the mean of its divisors is an integer number (16021296).

Almost surely, 2^243405433 is an apocalyptic number.

It is an amenable number.

243405433 is a deficient number, since it is larger than the sum of its proper divisors (12935303).

243405433 is a wasteful number, since it uses less digits than its factorization.

243405433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344.

The product of its (nonzero) digits is 17280, while the sum is 28.

The square root of 243405433 is about 15601.4561179398. The cubic root of 243405433 is about 624.3720053677.

Adding to 243405433 its reverse (334504342), we get a palindrome (577909775).

The spelling of 243405433 in words is "two hundred forty-three million, four hundred five thousand, four hundred thirty-three".