30955091 has 2 divisors, whose sum is σ = 30955092. Its totient is φ = 30955090.

The previous prime is 30955087. The next prime is 30955097. The reversal of 30955091 is 19055903.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30955091 - 2² = 30955087 is a prime.

It is not a weakly prime, because it can be changed into another prime (30955097) 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, 15477545 + 15477546.

It is an arithmetic number, because the mean of its divisors is an integer number (15477546).

Almost surely, 2^30955091 is an apocalyptic number.

30955091 is a deficient number, since it is larger than the sum of its proper divisors (1).

30955091 is an equidigital number, since it uses as much as digits as its factorization.

30955091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6075, while the sum is 32.

The square root of 30955091 is about 5563.7299539068. The cubic root of 30955091 is about 313.9862970206.

The spelling of 30955091 in words is "thirty million, nine hundred fifty-five thousand, ninety-one".