123230312120 has 64 divisors (see below), whose sum is σ = 280230904800. Its totient is φ = 48766648320.

The previous prime is 123230312089. The next prime is 123230312123. The reversal of 123230312120 is 21213032321.

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 = 123230312092 and 123230312101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123230312123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3272600 + ... + 3310040.

Almost surely, 2^123230312120 is an apocalyptic number.

123230312120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123230312120 is an abundant number, since it is smaller than the sum of its proper divisors (157000592680).

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

123230312120 is a wasteful number, since it uses less digits than its factorization.

123230312120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38328 (or 38324 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 123230312120 its reverse (21213032321), we get a palindrome (144443344441).

The spelling of 123230312120 in words is "one hundred twenty-three billion, two hundred thirty million, three hundred twelve thousand, one hundred twenty".