30509109 has 32 divisors (see below), whose sum is σ = 47880960. Its totient is φ = 19160064.

The previous prime is 30509107. The next prime is 30509137. The reversal of 30509109 is 90190503.

It is not a de Polignac number, because 30509109 - 2¹ = 30509107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30509107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44997 + ... + 45669.

It is an arithmetic number, because the mean of its divisors is an integer number (1496280).

Almost surely, 2^30509109 is an apocalyptic number.

It is an amenable number.

30509109 is a deficient number, since it is larger than the sum of its proper divisors (17371851).

30509109 is a wasteful number, since it uses less digits than its factorization.

30509109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778 (or 772 counting only the distinct ones).

The product of its (nonzero) digits is 1215, while the sum is 27.

The square root of 30509109 is about 5523.5051371389. The cubic root of 30509109 is about 312.4710893788.

The spelling of 30509109 in words is "thirty million, five hundred nine thousand, one hundred nine".