243113300545 has 16 divisors (see below), whose sum is σ = 308962839888. Its totient is φ = 183010938880.

The previous prime is 243113300533. The next prime is 243113300597. The reversal of 243113300545 is 545003311342.

It can be written as a sum of positive squares in 8 ways, for example, as 5468750401 + 237644550144 = 73951^2 + 487488^2 .

It is not a de Polignac number, because 243113300545 - 2⁵ = 243113300513 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 (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98367 + ... + 704203.

It is an arithmetic number, because the mean of its divisors is an integer number (19310177493).

Almost surely, 2^243113300545 is an apocalyptic number.

It is an amenable number.

243113300545 is a deficient number, since it is larger than the sum of its proper divisors (65849539343).

243113300545 is a wasteful number, since it uses less digits than its factorization.

243113300545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610580.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 243113300545 its reverse (545003311342), we get a palindrome (788116611887).

The spelling of 243113300545 in words is "two hundred forty-three billion, one hundred thirteen million, three hundred thousand, five hundred forty-five".