30320021320 has 32 divisors (see below), whose sum is σ = 68255550720. Its totient is φ = 12121696960.

The previous prime is 30320021311. The next prime is 30320021321. The reversal of 30320021320 is 2312002303.

It is a junction number, because it is equal to n+sod(n) for n = 30320021294 and 30320021303.

It is not an unprimeable number, because it can be changed into a prime (30320021321) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 119032 + ... + 273511.

It is an arithmetic number, because the mean of its divisors is an integer number (2132985960).

Almost surely, 2^30320021320 is an apocalyptic number.

It is an amenable number.

30320021320 is an abundant number, since it is smaller than the sum of its proper divisors (37935529400).

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

30320021320 is a wasteful number, since it uses less digits than its factorization.

30320021320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394485 (or 394481 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 30320021320 its reverse (2312002303), we get a palindrome (32632023623).

The spelling of 30320021320 in words is "thirty billion, three hundred twenty million, twenty-one thousand, three hundred twenty".