243321155103 has 16 divisors (see below), whose sum is σ = 349415271296. Its totient is φ = 149722788960.

The previous prime is 243321155101. The next prime is 243321155117. The reversal of 243321155103 is 301551123342.

243321155103 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 243321155103 - 2¹ = 243321155101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243321155101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176676 + ... + 719622.

It is an arithmetic number, because the mean of its divisors is an integer number (21838454456).

Almost surely, 2^243321155103 is an apocalyptic number.

243321155103 is a deficient number, since it is larger than the sum of its proper divisors (106094116193).

243321155103 is a wasteful number, since it uses less digits than its factorization.

243321155103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554454.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 243321155103 its reverse (301551123342), we get a palindrome (544872278445).

The spelling of 243321155103 in words is "two hundred forty-three billion, three hundred twenty-one million, one hundred fifty-five thousand, one hundred three".