30663091 has 2 divisors, whose sum is σ = 30663092. Its totient is φ = 30663090.

The previous prime is 30663043. The next prime is 30663103. The reversal of 30663091 is 19036603.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30663091 - 2⁷ = 30662963 is a prime.

It is not a weakly prime, because it can be changed into another prime (30663011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15331545 + 15331546.

It is an arithmetic number, because the mean of its divisors is an integer number (15331546).

Almost surely, 2^30663091 is an apocalyptic number.

30663091 is a deficient number, since it is larger than the sum of its proper divisors (1).

30663091 is an equidigital number, since it uses as much as digits as its factorization.

30663091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 30663091 is about 5537.4263877726. The cubic root of 30663091 is about 312.9958966074.

Adding to 30663091 its reverse (19036603), we get a palindrome (49699694).

The spelling of 30663091 in words is "thirty million, six hundred sixty-three thousand, ninety-one".