243123102202103 has 4 divisors (see below), whose sum is σ = 253693671863088. Its totient is φ = 232552532541120.

The previous prime is 243123102202093. The next prime is 243123102202117. The reversal of 243123102202103 is 301202201321342.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 243123102202103 - 2²⁴ = 243123085424887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243123102202133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5285284830458 + ... + 5285284830503.

It is an arithmetic number, because the mean of its divisors is an integer number (63423417965772).

Almost surely, 2^{243123102202103} is an apocalyptic number.

243123102202103 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

243123102202103 is a deficient number, since it is larger than the sum of its proper divisors (10570569660985).

243123102202103 is a wasteful number, since it uses less digits than its factorization.

243123102202103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10570569660984.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 243123102202103 its reverse (301202201321342), we get a palindrome (544325303523445).

The spelling of 243123102202103 in words is "two hundred forty-three trillion, one hundred twenty-three billion, one hundred two million, two hundred two thousand, one hundred three".