123231201000000 has 784 divisors, whose sum is σ = 426489274617408. Its totient is φ = 31368729600000.

The previous prime is 123231200999957. The next prime is 123231201000001. The reversal of 123231201000000 is 102132321.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (123231201000001) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 5882989527 + ... + 5883010473.

Almost surely, 2^{123231201000000} is an apocalyptic number.

123231201000000 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 123231201000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213244637308704).

123231201000000 is an abundant number, since it is smaller than the sum of its proper divisors (303258073617408).

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

123231201000000 is an frugal number, since it uses more digits than its factorization.

123231201000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21082 (or 21047 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 123231201000000 its reverse (102132321), we get a palindrome (123231303132321).

The spelling of 123231201000000 in words is "one hundred twenty-three trillion, two hundred thirty-one billion, two hundred one million", and thus it is an aban number.