231230203320 has 128 divisors (see below), whose sum is σ = 708715008000. Its totient is φ = 60326870016.

The previous prime is 231230203247. The next prime is 231230203343. The reversal of 231230203320 is 23302032132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19446417 + ... + 19458303.

It is an arithmetic number, because the mean of its divisors is an integer number (5536836000).

Almost surely, 2^231230203320 is an apocalyptic number.

231230203320 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 231230203320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (354357504000).

231230203320 is an abundant number, since it is smaller than the sum of its proper divisors (477484804680).

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

231230203320 is a wasteful number, since it uses less digits than its factorization.

231230203320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15397 (or 15393 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 231230203320 its reverse (23302032132), we get a palindrome (254532235452).

The spelling of 231230203320 in words is "two hundred thirty-one billion, two hundred thirty million, two hundred three thousand, three hundred twenty".