30150391 has 2 divisors, whose sum is σ = 30150392. Its totient is φ = 30150390.

The previous prime is 30150389. The next prime is 30150431. The reversal of 30150391 is 19305103.

It is a weak prime.

It is an emirp because it is prime and its reverse (19305103) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30150391 - 2¹ = 30150389 is a prime.

Together with 30150389, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30150311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15075195 + 15075196.

It is an arithmetic number, because the mean of its divisors is an integer number (15075196).

Almost surely, 2^30150391 is an apocalyptic number.

30150391 is a deficient number, since it is larger than the sum of its proper divisors (1).

30150391 is an equidigital number, since it uses as much as digits as its factorization.

30150391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 405, while the sum is 22.

The square root of 30150391 is about 5490.9371695549. The cubic root of 30150391 is about 311.2416073822.

Adding to 30150391 its reverse (19305103), we get a palindrome (49455494).

The spelling of 30150391 in words is "thirty million, one hundred fifty thousand, three hundred ninety-one".