305243041121 has 4 divisors (see below), whose sum is σ = 305328811200. Its totient is φ = 305157271044.

The previous prime is 305243041097. The next prime is 305243041189. The reversal of 305243041121 is 121140342503.

It is a happy number.

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 not a de Polignac number, because 305243041121 - 2⁶ = 305243041057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (305243041321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42879701 + ... + 42886818.

It is an arithmetic number, because the mean of its divisors is an integer number (76332202800).

Almost surely, 2^305243041121 is an apocalyptic number.

It is an amenable number.

305243041121 is a deficient number, since it is larger than the sum of its proper divisors (85770079).

305243041121 is an equidigital number, since it uses as much as digits as its factorization.

305243041121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85770078.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 305243041121 its reverse (121140342503), we get a palindrome (426383383624).

The spelling of 305243041121 in words is "three hundred five billion, two hundred forty-three million, forty-one thousand, one hundred twenty-one".