123210031320000 has 420 divisors, whose sum is σ = 441357861880936. Its totient is φ = 32852286720000.

The previous prime is 123210031319993. The next prime is 123210031320007. The reversal of 123210031320000 is 23130012321.

123210031320000 is a `hidden beast` number, since 1 + 232 + 100 + 313 + 20 + 0 + 0 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (123210031319993) and next prime (123210031320007).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123210031320007) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 4894907415 + ... + 4894932585.

Almost surely, 2^{123210031320000} is an apocalyptic number.

123210031320000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123210031320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220678930940468).

123210031320000 is an abundant number, since it is smaller than the sum of its proper divisors (318147830560936).

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

123210031320000 is a wasteful number, since it uses less digits than its factorization.

123210031320000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38806 (or 38778 counting only the distinct ones).

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

Adding to 123210031320000 its reverse (23130012321), we get a palindrome (123233161332321).

The spelling of 123210031320000 in words is "one hundred twenty-three trillion, two hundred ten billion, thirty-one million, three hundred twenty thousand".