243321203320115 has 32 divisors (see below), whose sum is σ = 293825734289856. Its totient is φ = 193433869025280.

The previous prime is 243321203320037. The next prime is 243321203320157. The reversal of 243321203320115 is 511023302123342.

It is not a de Polignac number, because 243321203320115 - 2¹⁸ = 243321203057971 is a prime.

It is a super-2 number, since 2×243321203320115² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4515872975 + ... + 4515926855.

It is an arithmetic number, because the mean of its divisors is an integer number (9182054196558).

Almost surely, 2^{243321203320115} is an apocalyptic number.

243321203320115 is a deficient number, since it is larger than the sum of its proper divisors (50504530969741).

243321203320115 is a wasteful number, since it uses less digits than its factorization.

243321203320115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62519.

The product of its (nonzero) digits is 25920, while the sum is 32.

Adding to 243321203320115 its reverse (511023302123342), we get a palindrome (754344505443457).

The spelling of 243321203320115 in words is "two hundred forty-three trillion, three hundred twenty-one billion, two hundred three million, three hundred twenty thousand, one hundred fifteen".