243123422103 has 64 divisors (see below), whose sum is σ = 365899161600. Its totient is φ = 159536943360.

The previous prime is 243123422093. The next prime is 243123422159. The reversal of 243123422103 is 301224321342.

243123422103 is a `hidden beast` number, since 2 + 4 + 312 + 342 + 2 + 1 + 0 + 3 = 666.

It is not a de Polignac number, because 243123422103 - 2¹⁸ = 243123159959 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243123422173) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 296130433 + ... + 296131253.

It is an arithmetic number, because the mean of its divisors is an integer number (5717174400).

Almost surely, 2^243123422103 is an apocalyptic number.

243123422103 is a deficient number, since it is larger than the sum of its proper divisors (122775739497).

243123422103 is a wasteful number, since it uses less digits than its factorization.

243123422103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1549 (or 1543 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 243123422103 its reverse (301224321342), we get a palindrome (544347743445).

The spelling of 243123422103 in words is "two hundred forty-three billion, one hundred twenty-three million, four hundred twenty-two thousand, one hundred three".