30913075 has 12 divisors (see below), whose sum is σ = 39149280. Its totient is φ = 24203360.

The previous prime is 30913073. The next prime is 30913111. The reversal of 30913075 is 57031903.

It is not a de Polignac number, because 30913075 - 2¹ = 30913073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30913073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11980 + ... + 14329.

It is an arithmetic number, because the mean of its divisors is an integer number (3262440).

Almost surely, 2^30913075 is an apocalyptic number.

30913075 is a deficient number, since it is larger than the sum of its proper divisors (8236205).

30913075 is a wasteful number, since it uses less digits than its factorization.

30913075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26366 (or 26361 counting only the distinct ones).

The product of its (nonzero) digits is 2835, while the sum is 28.

The square root of 30913075 is about 5559.9527875693. The cubic root of 30913075 is about 313.8441726168.

Adding to 30913075 its reverse (57031903), we get a palindrome (87944978).

The spelling of 30913075 in words is "thirty million, nine hundred thirteen thousand, seventy-five".