30680719 has 2 divisors, whose sum is σ = 30680720. Its totient is φ = 30680718.

The previous prime is 30680717. The next prime is 30680737. The reversal of 30680719 is 91708603.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30680719 - 2¹ = 30680717 is a prime.

It is a super-2 number, since 2×30680719² = 1882613036713922, which contains 22 as substring.

Together with 30680717, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30680717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15340359 + 15340360.

It is an arithmetic number, because the mean of its divisors is an integer number (15340360).

Almost surely, 2^30680719 is an apocalyptic number.

30680719 is a deficient number, since it is larger than the sum of its proper divisors (1).

30680719 is an equidigital number, since it uses as much as digits as its factorization.

30680719 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 34.

The square root of 30680719 is about 5539.0178732335. The cubic root of 30680719 is about 313.0558648461.

The spelling of 30680719 in words is "thirty million, six hundred eighty thousand, seven hundred nineteen".