235604813 has 4 divisors (see below), whose sum is σ = 235636380. Its totient is φ = 235573248.

The previous prime is 235604797. The next prime is 235604849. The reversal of 235604813 is 318406532.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 221027689 + 14577124 = 14867^2 + 3818^2 .

It is a cyclic number.

It is not a de Polignac number, because 235604813 - 2⁴ = 235604797 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 235604813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (235604113) 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 3 ways as a sum of consecutive naturals, for example, 2381 + ... + 21837.

It is an arithmetic number, because the mean of its divisors is an integer number (58909095).

Almost surely, 2^235604813 is an apocalyptic number.

It is an amenable number.

235604813 is a deficient number, since it is larger than the sum of its proper divisors (31567).

235604813 is a wasteful number, since it uses less digits than its factorization.

235604813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31566.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 235604813 is about 15349.4238654094. The cubic root of 235604813 is about 617.6295306517.

The spelling of 235604813 in words is "two hundred thirty-five million, six hundred four thousand, eight hundred thirteen".