30680399 has 2 divisors, whose sum is σ = 30680400. Its totient is φ = 30680398.

The previous prime is 30680357. The next prime is 30680407. The reversal of 30680399 is 99308603.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30680399 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30680329) 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, 15340199 + 15340200.

It is an arithmetic number, because the mean of its divisors is an integer number (15340200).

Almost surely, 2^30680399 is an apocalyptic number.

30680399 is a deficient number, since it is larger than the sum of its proper divisors (1).

30680399 is an equidigital number, since it uses as much as digits as its factorization.

30680399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 30680399 is about 5538.9889871709. The cubic root of 30680399 is about 313.0547764511.

The spelling of 30680399 in words is "thirty million, six hundred eighty thousand, three hundred ninety-nine".