30768911 has 2 divisors, whose sum is σ = 30768912. Its totient is φ = 30768910.

The previous prime is 30768893. The next prime is 30768931. The reversal of 30768911 is 11986703.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30768911 - 2¹⁰ = 30767887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30768931) 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, 15384455 + 15384456.

It is an arithmetic number, because the mean of its divisors is an integer number (15384456).

Almost surely, 2^30768911 is an apocalyptic number.

30768911 is a deficient number, since it is larger than the sum of its proper divisors (1).

30768911 is an equidigital number, since it uses as much as digits as its factorization.

30768911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 30768911 is about 5546.9731385685. The cubic root of 30768911 is about 313.3555385149.

The spelling of 30768911 in words is "thirty million, seven hundred sixty-eight thousand, nine hundred eleven".