243312314445 has 24 divisors (see below), whose sum is σ = 446549660856. Its totient is φ = 122133239808.

The previous prime is 243312314423. The next prime is 243312314449. The reversal of 243312314445 is 544413213342.

243312314445 is a `hidden beast` number, since 2 + 4 + 331 + 2 + 314 + 4 + 4 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 59783184036 + 183529130409 = 244506^2 + 428403^2 .

It is not a de Polignac number, because 243312314445 - 2⁷ = 243312314317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243312314449) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 159026892 + ... + 159028421.

It is an arithmetic number, because the mean of its divisors is an integer number (18606235869).

Almost surely, 2^243312314445 is an apocalyptic number.

It is an amenable number.

243312314445 is a deficient number, since it is larger than the sum of its proper divisors (203237346411).

243312314445 is a wasteful number, since it uses less digits than its factorization.

243312314445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318055341 (or 318055338 counting only the distinct ones).

The product of its digits is 138240, while the sum is 36.

Adding to 243312314445 its reverse (544413213342), we get a palindrome (787725527787).

The spelling of 243312314445 in words is "two hundred forty-three billion, three hundred twelve million, three hundred fourteen thousand, four hundred forty-five".