30135223 has 4 divisors (see below), whose sum is σ = 30155008. Its totient is φ = 30115440.

The previous prime is 30135211. The next prime is 30135227. The reversal of 30135223 is 32253103.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30135223 - 2⁵ = 30135191 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30135223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30135227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7398 + ... + 10723.

It is an arithmetic number, because the mean of its divisors is an integer number (7538752).

Almost surely, 2^30135223 is an apocalyptic number.

30135223 is a deficient number, since it is larger than the sum of its proper divisors (19785).

30135223 is a wasteful number, since it uses less digits than its factorization.

30135223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19784.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 30135223 is about 5489.5558108102. Note that the first 3 decimals coincide. The cubic root of 30135223 is about 311.1894056867.

Adding to 30135223 its reverse (32253103), we get a palindrome (62388326).

The spelling of 30135223 in words is "thirty million, one hundred thirty-five thousand, two hundred twenty-three".