123020312130 has 48 divisors (see below), whose sum is σ = 336687174720. Its totient is φ = 31078815264.

The previous prime is 123020312117. The next prime is 123020312147. The reversal of 123020312130 is 31213020321.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35969142 + ... + 35972561.

It is an arithmetic number, because the mean of its divisors is an integer number (7014316140).

Almost surely, 2^123020312130 is an apocalyptic number.

123020312130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123020312130 is an abundant number, since it is smaller than the sum of its proper divisors (213666862590).

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

123020312130 is a wasteful number, since it uses less digits than its factorization.

123020312130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71941735 (or 71941732 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 123020312130 its reverse (31213020321), we get a palindrome (154233332451).

The spelling of 123020312130 in words is "one hundred twenty-three billion, twenty million, three hundred twelve thousand, one hundred thirty".