243234415433 has 4 divisors (see below), whose sum is σ = 243238618308. Its totient is φ = 243230212560.

The previous prime is 243234415399. The next prime is 243234415451. The reversal of 243234415433 is 334514432342.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 52905520144 + 190328895289 = 230012^2 + 436267^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243234415433 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (243234415483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2013398 + ... + 2130783.

It is an arithmetic number, because the mean of its divisors is an integer number (60809654577).

Almost surely, 2^243234415433 is an apocalyptic number.

It is an amenable number.

243234415433 is a deficient number, since it is larger than the sum of its proper divisors (4202875).

243234415433 is an equidigital number, since it uses as much as digits as its factorization.

243234415433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4202874.

The product of its digits is 414720, while the sum is 38.

Adding to 243234415433 its reverse (334514432342), we get a palindrome (577748847775).

The spelling of 243234415433 in words is "two hundred forty-three billion, two hundred thirty-four million, four hundred fifteen thousand, four hundred thirty-three".