243641433 has 32 divisors (see below), whose sum is σ = 394813440. Its totient is φ = 130464000.

The previous prime is 243641423. The next prime is 243641449. The reversal of 243641433 is 334146342.

243641433 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 243641433 - 2⁴ = 243641417 is a prime.

It is a super-2 number, since 2×243641433² = 118722295748586978, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 243641433.

It is not an unprimeable number, because it can be changed into a prime (243641423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88248 + ... + 90966.

It is an arithmetic number, because the mean of its divisors is an integer number (12337920).

Almost surely, 2^243641433 is an apocalyptic number.

It is an amenable number.

243641433 is a deficient number, since it is larger than the sum of its proper divisors (151172007).

243641433 is a wasteful number, since it uses less digits than its factorization.

243641433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2997.

The product of its digits is 20736, while the sum is 30.

The square root of 243641433 is about 15609.0176820965. The cubic root of 243641433 is about 624.5737321659.

Adding to 243641433 its reverse (334146342), we get a palindrome (577787775).

The spelling of 243641433 in words is "two hundred forty-three million, six hundred forty-one thousand, four hundred thirty-three".