30135813 has 16 divisors (see below), whose sum is σ = 41674752. Its totient is φ = 19350000.

The previous prime is 30135811. The next prime is 30135827. The reversal of 30135813 is 31853103.

It is not a de Polignac number, because 30135813 - 2¹ = 30135811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30135811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22698 + ... + 23988.

It is an arithmetic number, because the mean of its divisors is an integer number (2604672).

Almost surely, 2^30135813 is an apocalyptic number.

It is an amenable number.

30135813 is a deficient number, since it is larger than the sum of its proper divisors (11538939).

30135813 is a wasteful number, since it uses less digits than its factorization.

30135813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1576.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 30135813 is about 5489.6095489570. The cubic root of 30135813 is about 311.1914365389.

Adding to 30135813 its reverse (31853103), we get a palindrome (61988916).

The spelling of 30135813 in words is "thirty million, one hundred thirty-five thousand, eight hundred thirteen".