123013203305020 has 96 divisors (see below), whose sum is σ = 299134908076032. Its totient is φ = 41620858656768.

The previous prime is 123013203305011. The next prime is 123013203305021. The reversal of 123013203305020 is 20503302310321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123013203305021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8340204 + ... + 17764723.

It is an arithmetic number, because the mean of its divisors is an integer number (3115988625792).

Almost surely, 2^{123013203305020} is an apocalyptic number.

123013203305020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123013203305020 is an abundant number, since it is smaller than the sum of its proper divisors (176121704771012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123013203305020 is a wasteful number, since it uses less digits than its factorization.

123013203305020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26105387 (or 26105385 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 25.

Adding to 123013203305020 its reverse (20503302310321), we get a palindrome (143516505615341).

The spelling of 123013203305020 in words is "one hundred twenty-three trillion, thirteen billion, two hundred three million, three hundred five thousand, twenty".