30031320330020 has 12 divisors (see below), whose sum is σ = 63065772693084. Its totient is φ = 12012528132000.

The previous prime is 30031320329999. The next prime is 30031320330023. The reversal of 30031320330020 is 2003302313003.

It can be written as a sum of positive squares in 2 ways, for example, as 7525234022656 + 22506086307364 = 2743216^2 + 4744058^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1501566016501 = 30031320330020 / (3 + 0 + 0 + 3 + 1 + 3 + 2 + 0 + 3 + 3 + 0 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 30031320329974 and 30031320330001.

It is not an unprimeable number, because it can be changed into a prime (30031320330023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 750783008231 + ... + 750783008270.

It is an arithmetic number, because the mean of its divisors is an integer number (5255481057757).

Almost surely, 2^{30031320330020} is an apocalyptic number.

It is an amenable number.

30031320330020 is an abundant number, since it is smaller than the sum of its proper divisors (33034452363064).

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

30031320330020 is a wasteful number, since it uses less digits than its factorization.

30031320330020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501566016510 (or 1501566016508 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 20.

Adding to 30031320330020 its reverse (2003302313003), we get a palindrome (32034622643023).

The spelling of 30031320330020 in words is "thirty trillion, thirty-one billion, three hundred twenty million, three hundred thirty thousand, twenty".