243120430115 has 4 divisors (see below), whose sum is σ = 291744516144. Its totient is φ = 194496344088.

The previous prime is 243120430093. The next prime is 243120430127. The reversal of 243120430115 is 511034021342.

It is a happy number.

243120430115 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 243120430115 - 2¹⁶ = 243120364579 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 24312043007 + ... + 24312043016.

It is an arithmetic number, because the mean of its divisors is an integer number (72936129036).

Almost surely, 2^243120430115 is an apocalyptic number.

243120430115 is a deficient number, since it is larger than the sum of its proper divisors (48624086029).

243120430115 is an equidigital number, since it uses as much as digits as its factorization.

243120430115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48624086028.

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

Adding to 243120430115 its reverse (511034021342), we get a palindrome (754154451457).

The spelling of 243120430115 in words is "two hundred forty-three billion, one hundred twenty million, four hundred thirty thousand, one hundred fifteen".