243343104421 has 8 divisors (see below), whose sum is σ = 244889483384. Its totient is φ = 241798944960.

The previous prime is 243343104401. The next prime is 243343104439. The reversal of 243343104421 is 124401343342.

It can be written as a sum of positive squares in 4 ways, for example, as 9971021025 + 233372083396 = 99855^2 + 483086^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243343104421 - 2⁷ = 243343104293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243343104401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334626 + ... + 773731.

It is an arithmetic number, because the mean of its divisors is an integer number (30611185423).

Almost surely, 2^243343104421 is an apocalyptic number.

It is an amenable number.

243343104421 is a deficient number, since it is larger than the sum of its proper divisors (1546378963).

243343104421 is a wasteful number, since it uses less digits than its factorization.

243343104421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109751.

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

Adding to 243343104421 its reverse (124401343342), we get a palindrome (367744447763).

The spelling of 243343104421 in words is "two hundred forty-three billion, three hundred forty-three million, one hundred four thousand, four hundred twenty-one".