123243431035203 has 6 divisors (see below), whose sum is σ = 178018289273084. Its totient is φ = 82162287356796.

The previous prime is 123243431035171. The next prime is 123243431035229. The reversal of 123243431035203 is 302530134342321.

123243431035203 is a `hidden beast` number, since 1 + 2 + 3 + 2 + 4 + 343 + 103 + 5 + 203 = 666.

It is not a de Polignac number, because 123243431035203 - 2⁵ = 123243431035171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123243431435203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6846857279725 + ... + 6846857279742.

Almost surely, 2^{123243431035203} is an apocalyptic number.

123243431035203 is a deficient number, since it is larger than the sum of its proper divisors (54774858237881).

123243431035203 is a wasteful number, since it uses less digits than its factorization.

123243431035203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13693714559473 (or 13693714559470 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 36.

Adding to 123243431035203 its reverse (302530134342321), we get a palindrome (425773565377524).

The spelling of 123243431035203 in words is "one hundred twenty-three trillion, two hundred forty-three billion, four hundred thirty-one million, thirty-five thousand, two hundred three".