243443013241 has 4 divisors (see below), whose sum is σ = 243857737872. Its totient is φ = 243028288612.

The previous prime is 243443013193. The next prime is 243443013277. The reversal of 243443013241 is 142310344342.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243443013241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243443019241) 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, 207361435 + ... + 207362608.

It is an arithmetic number, because the mean of its divisors is an integer number (60964434468).

Almost surely, 2^243443013241 is an apocalyptic number.

It is an amenable number.

243443013241 is a deficient number, since it is larger than the sum of its proper divisors (414724631).

243443013241 is an equidigital number, since it uses as much as digits as its factorization.

243443013241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414724630.

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

Adding to 243443013241 its reverse (142310344342), we get a palindrome (385753357583).

The spelling of 243443013241 in words is "two hundred forty-three billion, four hundred forty-three million, thirteen thousand, two hundred forty-one".