243434122321 has 16 divisors (see below), whose sum is σ = 263031874560. Its totient is φ = 223962120000.

The previous prime is 243434122271. The next prime is 243434122361. The reversal of 243434122321 is 123221434342.

It is a cyclic number.

It is not a de Polignac number, because 243434122321 - 2⁷ = 243434122193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243434122361) 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, 5101071 + ... + 5148571.

It is an arithmetic number, because the mean of its divisors is an integer number (16439492160).

Almost surely, 2^243434122321 is an apocalyptic number.

It is an amenable number.

243434122321 is a deficient number, since it is larger than the sum of its proper divisors (19597752239).

243434122321 is a wasteful number, since it uses less digits than its factorization.

243434122321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48816.

The product of its digits is 27648, while the sum is 31.

Adding to 243434122321 its reverse (123221434342), we get a palindrome (366655556663).

The spelling of 243434122321 in words is "two hundred forty-three billion, four hundred thirty-four million, one hundred twenty-two thousand, three hundred twenty-one".