30040911 has 6 divisors (see below), whose sum is σ = 43392440. Its totient is φ = 20027268.

The previous prime is 30040909. The next prime is 30040939. The reversal of 30040911 is 11904003.

It is not a de Polignac number, because 30040911 - 2¹ = 30040909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30040951) 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, 1668931 + ... + 1668948.

Almost surely, 2^30040911 is an apocalyptic number.

30040911 is a deficient number, since it is larger than the sum of its proper divisors (13351529).

30040911 is a wasteful number, since it uses less digits than its factorization.

30040911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3337885 (or 3337882 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 30040911 is about 5480.9589489432. The cubic root of 30040911 is about 310.8644308713.

Adding to 30040911 its reverse (11904003), we get a palindrome (41944914).

The spelling of 30040911 in words is "thirty million, forty thousand, nine hundred eleven".