123312030320 has 40 divisors (see below), whose sum is σ = 286923131280. Its totient is φ = 49286504960.

The previous prime is 123312030311. The next prime is 123312030323. The reversal of 123312030320 is 23030213321.

123312030320 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

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 = 123312030292 and 123312030301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123312030323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 494786 + ... + 701025.

It is an arithmetic number, because the mean of its divisors is an integer number (7173078282).

Almost surely, 2^123312030320 is an apocalyptic number.

123312030320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123312030320 is an abundant number, since it is smaller than the sum of its proper divisors (163611100960).

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

123312030320 is a wasteful number, since it uses less digits than its factorization.

123312030320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197113 (or 1197107 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 123312030320 its reverse (23030213321), we get a palindrome (146342243641).

The spelling of 123312030320 in words is "one hundred twenty-three billion, three hundred twelve million, thirty thousand, three hundred twenty".