243120354315 has 32 divisors (see below), whose sum is σ = 391093570560. Its totient is φ = 128964151296.

The previous prime is 243120354227. The next prime is 243120354383. The reversal of 243120354315 is 513453021342.

It is not a de Polignac number, because 243120354315 - 2⁷ = 243120354187 is a prime.

It is a super-2 number, since 2×243120354315² (a number of 24 digits) contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 24958716 + ... + 24968454.

It is an arithmetic number, because the mean of its divisors is an integer number (12221674080).

Almost surely, 2^243120354315 is an apocalyptic number.

243120354315 is a deficient number, since it is larger than the sum of its proper divisors (147973216245).

243120354315 is a wasteful number, since it uses less digits than its factorization.

243120354315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18563.

The product of its (nonzero) digits is 43200, while the sum is 33.

Adding to 243120354315 its reverse (513453021342), we get a palindrome (756573375657).

The spelling of 243120354315 in words is "two hundred forty-three billion, one hundred twenty million, three hundred fifty-four thousand, three hundred fifteen".