30012109 has 4 divisors (see below), whose sum is σ = 30292704. Its totient is φ = 29731516.

The previous prime is 30012107. The next prime is 30012139. The reversal of 30012109 is 90121003.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30012109 - 2¹ = 30012107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30012092 and 30012101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30012107) 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, 140137 + ... + 140350.

It is an arithmetic number, because the mean of its divisors is an integer number (7573176).

Almost surely, 2^30012109 is an apocalyptic number.

It is an amenable number.

30012109 is a deficient number, since it is larger than the sum of its proper divisors (280595).

30012109 is a wasteful number, since it uses less digits than its factorization.

30012109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280594.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 30012109 is about 5478.3308589387. The cubic root of 30012109 is about 310.7650510590.

The spelling of 30012109 in words is "thirty million, twelve thousand, one hundred nine".