30312010321 has 2 divisors, whose sum is σ = 30312010322. Its totient is φ = 30312010320.

The previous prime is 30312010303. The next prime is 30312010349. The reversal of 30312010321 is 12301021303.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29606364225 + 705646096 = 172065^2 + 26564^2 .

It is a cyclic number.

It is not a de Polignac number, because 30312010321 - 2⁷ = 30312010193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30312010295 and 30312010304.

It is not a weakly prime, because it can be changed into another prime (30312011321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15156005160 + 15156005161.

It is an arithmetic number, because the mean of its divisors is an integer number (15156005161).

Almost surely, 2^30312010321 is an apocalyptic number.

It is an amenable number.

30312010321 is a deficient number, since it is larger than the sum of its proper divisors (1).

30312010321 is an equidigital number, since it uses as much as digits as its factorization.

30312010321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 30312010321 its reverse (12301021303), we get a palindrome (42613031624).

The spelling of 30312010321 in words is "thirty billion, three hundred twelve million, ten thousand, three hundred twenty-one".