123100131213020 has 96 divisors (see below), whose sum is σ = 287806806184128. Its totient is φ = 43937640456192.

The previous prime is 123100131212969. The next prime is 123100131213041. The reversal of 123100131213020 is 20312131001321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 123100131212983 and 123100131213001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55671959 + ... + 57840878.

It is an arithmetic number, because the mean of its divisors is an integer number (2997987564418).

Almost surely, 2^{123100131213020} is an apocalyptic number.

123100131213020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123100131213020 is an abundant number, since it is smaller than the sum of its proper divisors (164706674971108).

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

123100131213020 is a wasteful number, since it uses less digits than its factorization.

123100131213020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113512999 (or 113512997 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 123100131213020 its reverse (20312131001321), we get a palindrome (143412262214341).

The spelling of 123100131213020 in words is "one hundred twenty-three trillion, one hundred billion, one hundred thirty-one million, two hundred thirteen thousand, twenty".