30109243 has 4 divisors (see below), whose sum is σ = 31693960. Its totient is φ = 28524528.

The previous prime is 30109241. The next prime is 30109253. The reversal of 30109243 is 34290103.

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 30109243 - 2¹ = 30109241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30109241) 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, 792330 + ... + 792367.

It is an arithmetic number, because the mean of its divisors is an integer number (7923490).

Almost surely, 2^30109243 is an apocalyptic number.

30109243 is a deficient number, since it is larger than the sum of its proper divisors (1584717).

30109243 is a wasteful number, since it uses less digits than its factorization.

30109243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1584716.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 30109243 is about 5487.1889889086. The cubic root of 30109243 is about 311.0999530531.

Adding to 30109243 its reverse (34290103), we get a palindrome (64399346).

The spelling of 30109243 in words is "thirty million, one hundred nine thousand, two hundred forty-three".