123013113020 has 24 divisors (see below), whose sum is σ = 295231471584. Its totient is φ = 42175924416.

The previous prime is 123013112977. The next prime is 123013113029. The reversal of 123013113020 is 20311310321.

It is a self number, because there is not a number n which added to its sum of digits gives 123013113020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123013113029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 439332407 + ... + 439332686.

It is an arithmetic number, because the mean of its divisors is an integer number (12301311316).

Almost surely, 2^123013113020 is an apocalyptic number.

123013113020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123013113020 is an abundant number, since it is smaller than the sum of its proper divisors (172218358564).

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

123013113020 is a wasteful number, since it uses less digits than its factorization.

123013113020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878665109 (or 878665107 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 123013113020 its reverse (20311310321), we get a palindrome (143324423341).

The spelling of 123013113020 in words is "one hundred twenty-three billion, thirteen million, one hundred thirteen thousand, twenty".