30201091 has 2 divisors, whose sum is σ = 30201092. Its totient is φ = 30201090.

The previous prime is 30201077. The next prime is 30201137. The reversal of 30201091 is 19010203.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30201091 - 2⁹ = 30200579 is a prime.

It is not a weakly prime, because it can be changed into another prime (30207091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15100545 + 15100546.

It is an arithmetic number, because the mean of its divisors is an integer number (15100546).

Almost surely, 2^30201091 is an apocalyptic number.

30201091 is a deficient number, since it is larger than the sum of its proper divisors (1).

30201091 is an equidigital number, since it uses as much as digits as its factorization.

30201091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 30201091 is about 5495.5519286055. The cubic root of 30201091 is about 311.4159678929.

Adding to 30201091 its reverse (19010203), we get a palindrome (49211294).

The spelling of 30201091 in words is "thirty million, two hundred one thousand, ninety-one".