243203241433 has 2 divisors, whose sum is σ = 243203241434. Its totient is φ = 243203241432.

The previous prime is 243203241389. The next prime is 243203241551. The reversal of 243203241433 is 334142302342.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168763212864 + 74440028569 = 410808^2 + 272837^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243203241433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243203241395 and 243203241404.

It is not a weakly prime, because it can be changed into another prime (243203248433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121601620716 + 121601620717.

It is an arithmetic number, because the mean of its divisors is an integer number (121601620717).

Almost surely, 2^243203241433 is an apocalyptic number.

It is an amenable number.

243203241433 is a deficient number, since it is larger than the sum of its proper divisors (1).

243203241433 is an equidigital number, since it uses as much as digits as its factorization.

243203241433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 243203241433 its reverse (334142302342), we get a palindrome (577345543775).

The spelling of 243203241433 in words is "two hundred forty-three billion, two hundred three million, two hundred forty-one thousand, four hundred thirty-three".