30040223 has 4 divisors (see below), whose sum is σ = 30231720. Its totient is φ = 29848728.

The previous prime is 30040217. The next prime is 30040229. The reversal of 30040223 is 32204003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32204003 = 13 ⋅2477231.

It is an interprime number because it is at equal distance from previous prime (30040217) and next prime (30040229).

It is a cyclic number.

It is not a de Polignac number, because 30040223 - 2¹⁰ = 30039199 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30040198 and 30040207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30040229) 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 in 3 ways as a sum of consecutive naturals, for example, 95513 + ... + 95826.

It is an arithmetic number, because the mean of its divisors is an integer number (7557930).

Almost surely, 2^30040223 is an apocalyptic number.

30040223 is a deficient number, since it is larger than the sum of its proper divisors (191497).

30040223 is a wasteful number, since it uses less digits than its factorization.

30040223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191496.

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 30040223 is about 5480.8961858441. The cubic root of 30040223 is about 310.8620577035.

Adding to 30040223 its reverse (32204003), we get a palindrome (62244226).

The spelling of 30040223 in words is "thirty million, forty thousand, two hundred twenty-three".