30123305 has 4 divisors (see below), whose sum is σ = 36147972. Its totient is φ = 24098640.

The previous prime is 30123281. The next prime is 30123329. The reversal of 30123305 is 50332103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50332103 = 947 ⋅53149.

It is an interprime number because it is at equal distance from previous prime (30123281) and next prime (30123329).

It can be written as a sum of positive squares in 2 ways, for example, as 7958041 + 22165264 = 2821^2 + 4708^2 .

It is not a de Polignac number, because 30123305 - 2¹² = 30119209 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 3012326 + ... + 3012335.

It is an arithmetic number, because the mean of its divisors is an integer number (9036993).

Almost surely, 2^30123305 is an apocalyptic number.

It is an amenable number.

30123305 is a deficient number, since it is larger than the sum of its proper divisors (6024667).

30123305 is an equidigital number, since it uses as much as digits as its factorization.

30123305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6024666.

The product of its (nonzero) digits is 270, while the sum is 17.

The square root of 30123305 is about 5488.4701875842. The cubic root of 30123305 is about 311.1483767955.

Adding to 30123305 its reverse (50332103), we get a palindrome (80455408).

The spelling of 30123305 in words is "thirty million, one hundred twenty-three thousand, three hundred five".