30688199 has 2 divisors, whose sum is σ = 30688200. Its totient is φ = 30688198.

The previous prime is 30688157. The next prime is 30688223. The reversal of 30688199 is 99188603.

It is a strong prime.

It is an emirp because it is prime and its reverse (99188603) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30688199 - 2¹⁶ = 30622663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30688139) 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, 15344099 + 15344100.

It is an arithmetic number, because the mean of its divisors is an integer number (15344100).

Almost surely, 2^30688199 is an apocalyptic number.

30688199 is a deficient number, since it is larger than the sum of its proper divisors (1).

30688199 is an equidigital number, since it uses as much as digits as its factorization.

30688199 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 30688199 is about 5539.6930420376. The cubic root of 30688199 is about 313.0813039239.

The spelling of 30688199 in words is "thirty million, six hundred eighty-eight thousand, one hundred ninety-nine".