243203240434 has 16 divisors (see below), whose sum is σ = 454821644736. Its totient is φ = 94754509200.

The previous prime is 243203240429. The next prime is 243203240477. The reversal of 243203240434 is 434042302342.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 243203240396 and 243203240405.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 789620757 + ... + 789621064.

It is an arithmetic number, because the mean of its divisors is an integer number (28426352796).

Almost surely, 2^243203240434 is an apocalyptic number.

243203240434 is a deficient number, since it is larger than the sum of its proper divisors (211618404302).

243203240434 is a wasteful number, since it uses less digits than its factorization.

243203240434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1579241841.

The product of its (nonzero) digits is 55296, while the sum is 31.

Adding to 243203240434 its reverse (434042302342), we get a palindrome (677245542776).

The spelling of 243203240434 in words is "two hundred forty-three billion, two hundred three million, two hundred forty thousand, four hundred thirty-four".