30423091 has 2 divisors, whose sum is σ = 30423092. Its totient is φ = 30423090.

The previous prime is 30423083. The next prime is 30423097. The reversal of 30423091 is 19032403.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30423091 - 2³ = 30423083 is a prime.

It is not a weakly prime, because it can be changed into another prime (30423097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15211545 + 15211546.

It is an arithmetic number, because the mean of its divisors is an integer number (15211546).

Almost surely, 2^30423091 is an apocalyptic number.

30423091 is a deficient number, since it is larger than the sum of its proper divisors (1).

30423091 is an equidigital number, since it uses as much as digits as its factorization.

30423091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 30423091 is about 5515.7130998630. The cubic root of 30423091 is about 312.1771505198.

Adding to 30423091 its reverse (19032403), we get a palindrome (49455494).

The spelling of 30423091 in words is "thirty million, four hundred twenty-three thousand, ninety-one".