30680357 has 2 divisors, whose sum is σ = 30680358. Its totient is φ = 30680356.

The previous prime is 30680333. The next prime is 30680399. The reversal of 30680357 is 75308603.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30481441 + 198916 = 5521^2 + 446^2 .

It is a cyclic number.

It is not a de Polignac number, because 30680357 - 2⁸ = 30680101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30680327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15340178 + 15340179.

It is an arithmetic number, because the mean of its divisors is an integer number (15340179).

Almost surely, 2^30680357 is an apocalyptic number.

It is an amenable number.

30680357 is a deficient number, since it is larger than the sum of its proper divisors (1).

30680357 is an equidigital number, since it uses as much as digits as its factorization.

30680357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 30680357 is about 5538.9851958639. The cubic root of 30680357 is about 313.0546335987.

The spelling of 30680357 in words is "thirty million, six hundred eighty thousand, three hundred fifty-seven".