30132009 has 6 divisors (see below), whose sum is σ = 43524026. Its totient is φ = 20088000.

The previous prime is 30131999. The next prime is 30132013. The reversal of 30132009 is 90023103.

It can be written as a sum of positive squares in only one way, i.e., 29942784 + 189225 = 5472^2 + 435^2 .

It is not a de Polignac number, because 30132009 - 2⁴ = 30131993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30131982 and 30132000.

It is not an unprimeable number, because it can be changed into a prime (30132019) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1673992 + ... + 1674009.

Almost surely, 2^30132009 is an apocalyptic number.

It is an amenable number.

30132009 is a deficient number, since it is larger than the sum of its proper divisors (13392017).

30132009 is a wasteful number, since it uses less digits than its factorization.

30132009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3348007 (or 3348004 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 30132009 is about 5489.2630652939. The cubic root of 30132009 is about 311.1783422400.

The spelling of 30132009 in words is "thirty million, one hundred thirty-two thousand, nine".