30231320320 has 144 divisors (see below), whose sum is σ = 77007127680. Its totient is φ = 11331633152.

The previous prime is 30231320293. The next prime is 30231320333. The reversal of 30231320320 is 2302313203.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5197734 + ... + 5203546.

It is an arithmetic number, because the mean of its divisors is an integer number (534771720).

Almost surely, 2^30231320320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30231320320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38503563840).

30231320320 is an abundant number, since it is smaller than the sum of its proper divisors (46775807360).

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

30231320320 is a wasteful number, since it uses less digits than its factorization.

30231320320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6090 (or 6076 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 30231320320 its reverse (2302313203), we get a palindrome (32533633523).

The spelling of 30231320320 in words is "thirty billion, two hundred thirty-one million, three hundred twenty thousand, three hundred twenty".