213936935 has 4 divisors (see below), whose sum is σ = 256724328. Its totient is φ = 171149544.

The previous prime is 213936929. The next prime is 213936937. The reversal of 213936935 is 539639312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213936935 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213936892 and 213936901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213936937) 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, 21393689 + ... + 21393698.

It is an arithmetic number, because the mean of its divisors is an integer number (64181082).

Almost surely, 2^213936935 is an apocalyptic number.

213936935 is a deficient number, since it is larger than the sum of its proper divisors (42787393).

213936935 is an equidigital number, since it uses as much as digits as its factorization.

213936935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42787392.

The product of its digits is 131220, while the sum is 41.

The square root of 213936935 is about 14626.5831621743. The cubic root of 213936935 is about 598.0836404226.

The spelling of 213936935 in words is "two hundred thirteen million, nine hundred thirty-six thousand, nine hundred thirty-five".