123013203135243 has 24 divisors (see below), whose sum is σ = 166859435515968. Its totient is φ = 80611696908000.

The previous prime is 123013203135241. The next prime is 123013203135247. The reversal of 123013203135243 is 342531302310321.

It is not a de Polignac number, because 123013203135243 - 2¹ = 123013203135241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123013203135241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13491688 + ... + 20689418.

It is an arithmetic number, because the mean of its divisors is an integer number (6952476479832).

Almost surely, 2^{123013203135243} is an apocalyptic number.

123013203135243 is a deficient number, since it is larger than the sum of its proper divisors (43846232380725).

123013203135243 is an equidigital number, since it uses as much as digits as its factorization.

123013203135243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7199387 (or 7199326 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 33.

Adding to 123013203135243 its reverse (342531302310321), we get a palindrome (465544505445564).

The spelling of 123013203135243 in words is "one hundred twenty-three trillion, thirteen billion, two hundred three million, one hundred thirty-five thousand, two hundred forty-three".