30031313321 has 4 divisors (see below), whose sum is σ = 30070777044. Its totient is φ = 29991849600.

The previous prime is 30031313317. The next prime is 30031313357. The reversal of 30031313321 is 12331313003.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11764439296 + 18266874025 = 108464^2 + 135155^2 .

It is a cyclic number.

It is not a de Polignac number, because 30031313321 - 2² = 30031313317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30031313293 and 30031313302.

It is not an unprimeable number, because it can be changed into a prime (30031310321) 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 3 ways as a sum of consecutive naturals, for example, 19730720 + ... + 19732241.

It is an arithmetic number, because the mean of its divisors is an integer number (7517694261).

Almost surely, 2^30031313321 is an apocalyptic number.

It is an amenable number.

30031313321 is a deficient number, since it is larger than the sum of its proper divisors (39463723).

30031313321 is an equidigital number, since it uses as much as digits as its factorization.

30031313321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39463722.

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 30031313321 its reverse (12331313003), we get a palindrome (42362626324).

The spelling of 30031313321 in words is "thirty billion, thirty-one million, three hundred thirteen thousand, three hundred twenty-one".