30085387 has 2 divisors, whose sum is σ = 30085388. Its totient is φ = 30085386.

The previous prime is 30085381. The next prime is 30085409. The reversal of 30085387 is 78358003.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30085387 - 2¹⁹ = 29561099 is a prime.

It is equal to p_1862881 and since 30085387 and 1862881 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (30085381) 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, 15042693 + 15042694.

It is an arithmetic number, because the mean of its divisors is an integer number (15042694).

Almost surely, 2^30085387 is an apocalyptic number.

30085387 is a deficient number, since it is larger than the sum of its proper divisors (1).

30085387 is an equidigital number, since it uses as much as digits as its factorization.

30085387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 30085387 is about 5485.0147675280. The cubic root of 30085387 is about 311.0177683076.

The spelling of 30085387 in words is "thirty million, eighty-five thousand, three hundred eighty-seven".