30712320000 has 780 divisors, whose sum is σ = 117093817984. Its totient is φ = 7741440000.

The previous prime is 30712319987. The next prime is 30712320013. The reversal of 30712320000 is 2321703.

It is an interprime number because it is at equal distance from previous prime (30712319987) and next prime (30712320013).

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 polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 714239979 + ... + 714240021.

Almost surely, 2^30712320000 is an apocalyptic number.

30712320000 is a gapful number since it is divisible by the number (30) 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 30712320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58546908992).

30712320000 is an abundant number, since it is smaller than the sum of its proper divisors (86381497984).

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

30712320000 is an equidigital number, since it uses as much as digits as its factorization.

30712320000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 84 counting only the distinct ones).

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

Adding to 30712320000 its reverse (2321703), we get a palindrome (30714641703).

The spelling of 30712320000 in words is "thirty billion, seven hundred twelve million, three hundred twenty thousand".