30290191 has 2 divisors, whose sum is σ = 30290192. Its totient is φ = 30290190.

The previous prime is 30290179. The next prime is 30290219. The reversal of 30290191 is 19109203.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30290191 - 2⁵ = 30290159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30290291) 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, 15145095 + 15145096.

It is an arithmetic number, because the mean of its divisors is an integer number (15145096).

Almost surely, 2^30290191 is an apocalyptic number.

30290191 is a deficient number, since it is larger than the sum of its proper divisors (1).

30290191 is an equidigital number, since it uses as much as digits as its factorization.

30290191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 30290191 is about 5503.6525144671. The cubic root of 30290191 is about 311.7219162286.

Adding to 30290191 its reverse (19109203), we get a palindrome (49399394).

The spelling of 30290191 in words is "thirty million, two hundred ninety thousand, one hundred ninety-one".