243121200315 has 64 divisors (see below), whose sum is σ = 459108556800. Its totient is φ = 107508280320.

The previous prime is 243121200271. The next prime is 243121200323. The reversal of 243121200315 is 513002121342.

It is not a de Polignac number, because 243121200315 - 2⁶ = 243121200251 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7917111 + ... + 7947759.

It is an arithmetic number, because the mean of its divisors is an integer number (7173571200).

Almost surely, 2^243121200315 is an apocalyptic number.

243121200315 is a deficient number, since it is larger than the sum of its proper divisors (215987356485).

243121200315 is a wasteful number, since it uses less digits than its factorization.

243121200315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33132.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 243121200315 its reverse (513002121342), we get a palindrome (756123321657).

The spelling of 243121200315 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred thousand, three hundred fifteen".