30311217329 has 2 divisors, whose sum is σ = 30311217330. Its totient is φ = 30311217328.

The previous prime is 30311217323. The next prime is 30311217451. The reversal of 30311217329 is 92371211303.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29851200625 + 460016704 = 172775^2 + 21448^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30311217329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30311217295 and 30311217304.

It is not a weakly prime, because it can be changed into another prime (30311217323) 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, 15155608664 + 15155608665.

It is an arithmetic number, because the mean of its divisors is an integer number (15155608665).

Almost surely, 2^30311217329 is an apocalyptic number.

It is an amenable number.

30311217329 is a deficient number, since it is larger than the sum of its proper divisors (1).

30311217329 is an equidigital number, since it uses as much as digits as its factorization.

30311217329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 32.

The spelling of 30311217329 in words is "thirty billion, three hundred eleven million, two hundred seventeen thousand, three hundred twenty-nine".