30668319 has 12 divisors (see below), whose sum is σ = 48325992. Its totient is φ = 18586800.

The previous prime is 30668317. The next prime is 30668327. The reversal of 30668319 is 91386603.

It is a happy number.

It is not a de Polignac number, because 30668319 - 2¹ = 30668317 is a prime.

It is a super-2 number, since 2×30668319² = 1881091580571522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30668311) 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 in 11 ways as a sum of consecutive naturals, for example, 154792 + ... + 154989.

It is an arithmetic number, because the mean of its divisors is an integer number (4027166).

Almost surely, 2^30668319 is an apocalyptic number.

30668319 is a deficient number, since it is larger than the sum of its proper divisors (17657673).

30668319 is a wasteful number, since it uses less digits than its factorization.

30668319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309798 (or 309795 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 30668319 is about 5537.8984281043. The cubic root of 30668319 is about 313.0136840027.

The spelling of 30668319 in words is "thirty million, six hundred sixty-eight thousand, three hundred nineteen".