30123223 has 4 divisors (see below), whose sum is σ = 32440408. Its totient is φ = 27806040.

The previous prime is 30123211. The next prime is 30123229. The reversal of 30123223 is 32232103.

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 30123223 - 2¹³ = 30115031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30123197 and 30123206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30123229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1158573 + ... + 1158598.

It is an arithmetic number, because the mean of its divisors is an integer number (8110102).

Almost surely, 2^30123223 is an apocalyptic number.

30123223 is a deficient number, since it is larger than the sum of its proper divisors (2317185).

30123223 is a wasteful number, since it uses less digits than its factorization.

30123223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2317184.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 30123223 is about 5488.4627173736. The cubic root of 30123223 is about 311.1480944649.

Adding to 30123223 its reverse (32232103), we get a palindrome (62355326).

The spelling of 30123223 in words is "thirty million, one hundred twenty-three thousand, two hundred twenty-three".