243440322105 has 16 divisors (see below), whose sum is σ = 400031665344. Its totient is φ = 126325788480.

The previous prime is 243440322061. The next prime is 243440322137. The reversal of 243440322105 is 501223044342.

It is not a de Polignac number, because 243440322105 - 2¹⁴ = 243440305721 is a prime.

It is a super-3 number, since 3×243440322105³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219315051 + ... + 219316160.

It is an arithmetic number, because the mean of its divisors is an integer number (25001979084).

Almost surely, 2^243440322105 is an apocalyptic number.

It is an amenable number.

243440322105 is a deficient number, since it is larger than the sum of its proper divisors (156591343239).

243440322105 is a wasteful number, since it uses less digits than its factorization.

243440322105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438631256.

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 243440322105 its reverse (501223044342), we get a palindrome (744663366447).

The spelling of 243440322105 in words is "two hundred forty-three billion, four hundred forty million, three hundred twenty-two thousand, one hundred five".