231730200000 has 672 divisors, whose sum is σ = 917278165440. Its totient is φ = 57024000000.

The previous prime is 231730199993. The next prime is 231730200011. The reversal of 231730200000 is 2037132.

231730200000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 70198350 + ... + 70201650.

It is an arithmetic number, because the mean of its divisors is an integer number (1364997270).

Almost surely, 2^231730200000 is an apocalyptic number.

231730200000 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 231730200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (458639082720).

231730200000 is an abundant number, since it is smaller than the sum of its proper divisors (685547965440).

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

231730200000 is an equidigital number, since it uses as much as digits as its factorization.

231730200000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3360 (or 3324 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

Adding to 231730200000 its reverse (2037132), we get a palindrome (231732237132).

The spelling of 231730200000 in words is "two hundred thirty-one billion, seven hundred thirty million, two hundred thousand".