30321023121320 has 32 divisors (see below), whose sum is σ = 68222648151720. Its totient is φ = 12128347714560.

The previous prime is 30321023121281. The next prime is 30321023121329. The reversal of 30321023121320 is 2312132012303.

It can be written as a sum of positive squares in 4 ways, for example, as 27664885906564 + 2656137214756 = 5259742^2 + 1629766^2 .

It is not an unprimeable number, because it can be changed into a prime (30321023121329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6516980 + ... + 10154460.

Almost surely, 2^{30321023121320} is an apocalyptic number.

It is an amenable number.

30321023121320 is an abundant number, since it is smaller than the sum of its proper divisors (37901625030400).

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

30321023121320 is a wasteful number, since it uses less digits than its factorization.

30321023121320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3845885 (or 3845881 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 30321023121320 its reverse (2312132012303), we get a palindrome (32633155133623).

The spelling of 30321023121320 in words is "thirty trillion, three hundred twenty-one billion, twenty-three million, one hundred twenty-one thousand, three hundred twenty".