243072312045 has 16 divisors (see below), whose sum is σ = 389659336512. Its totient is φ = 129390687360.

The previous prime is 243072312037. The next prime is 243072312047. The reversal of 243072312045 is 540213270342.

243072312045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 243072312045 - 2³ = 243072312037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243072311997 and 243072312015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243072312047) 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 15 ways as a sum of consecutive naturals, for example, 15484336 + ... + 15500025.

It is an arithmetic number, because the mean of its divisors is an integer number (24353708532).

Almost surely, 2^243072312045 is an apocalyptic number.

It is an amenable number.

243072312045 is a deficient number, since it is larger than the sum of its proper divisors (146587024467).

243072312045 is a wasteful number, since it uses less digits than its factorization.

243072312045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30984892.

The product of its (nonzero) digits is 40320, while the sum is 33.

Adding to 243072312045 its reverse (540213270342), we get a palindrome (783285582387).

The spelling of 243072312045 in words is "two hundred forty-three billion, seventy-two million, three hundred twelve thousand, forty-five".