30120012320 has 48 divisors (see below), whose sum is σ = 71527299480. Its totient is φ = 11985567744.

The previous prime is 30120012313. The next prime is 30120012343. The reversal of 30120012320 is 2321002103.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17959216144 + 12160796176 = 134012^2 + 110276^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30120012295 and 30120012304.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 456815 + ... + 518574.

Almost surely, 2^30120012320 is an apocalyptic number.

It is an amenable number.

30120012320 is an abundant number, since it is smaller than the sum of its proper divisors (41407287160).

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

30120012320 is a wasteful number, since it uses less digits than its factorization.

30120012320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975597 (or 975589 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 30120012320 its reverse (2321002103), we get a palindrome (32441014423).

The spelling of 30120012320 in words is "thirty billion, one hundred twenty million, twelve thousand, three hundred twenty".