30808123 has 2 divisors, whose sum is σ = 30808124. Its totient is φ = 30808122.

The previous prime is 30808091. The next prime is 30808147. The reversal of 30808123 is 32180803.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30808123 - 2⁵ = 30808091 is a prime.

It is not a weakly prime, because it can be changed into another prime (30808153) 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, 15404061 + 15404062.

It is an arithmetic number, because the mean of its divisors is an integer number (15404062).

Almost surely, 2^30808123 is an apocalyptic number.

30808123 is a deficient number, since it is larger than the sum of its proper divisors (1).

30808123 is an equidigital number, since it uses as much as digits as its factorization.

30808123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 30808123 is about 5550.5065534598. The cubic root of 30808123 is about 313.4885957796.

Adding to 30808123 its reverse (32180803), we get a palindrome (62988926).

The spelling of 30808123 in words is "thirty million, eight hundred eight thousand, one hundred twenty-three".