231210123000 has 128 divisors (see below), whose sum is σ = 721554462720. Its totient is φ = 61640745600.

The previous prime is 231210122963. The next prime is 231210123083. The reversal of 231210123000 is 321012132.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17342337 + ... + 17355663.

It is an arithmetic number, because the mean of its divisors is an integer number (5637144240).

Almost surely, 2^231210123000 is an apocalyptic number.

231210123000 is a gapful number since it is divisible by the number (20) 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 231210123000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (360777231360).

231210123000 is an abundant number, since it is smaller than the sum of its proper divisors (490344339720).

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

231210123000 is a wasteful number, since it uses less digits than its factorization.

231210123000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19134 (or 19120 counting only the distinct ones).

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

Adding to 231210123000 its reverse (321012132), we get a palindrome (231531135132).

The spelling of 231210123000 in words is "two hundred thirty-one billion, two hundred ten million, one hundred twenty-three thousand".