213400303 has 4 divisors (see below), whose sum is σ = 225953280. Its totient is φ = 200847328.

The previous prime is 213400301. The next prime is 213400331. The reversal of 213400303 is 303004312.

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

It is a cyclic number.

It is not a de Polignac number, because 213400303 - 2¹ = 213400301 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 (213400301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6276463 + ... + 6276496.

It is an arithmetic number, because the mean of its divisors is an integer number (56488320).

Almost surely, 2^213400303 is an apocalyptic number.

213400303 is a deficient number, since it is larger than the sum of its proper divisors (12552977).

213400303 is a wasteful number, since it uses less digits than its factorization.

213400303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12552976.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 213400303 is about 14608.2272367320. The cubic root of 213400303 is about 597.5831509541.

Adding to 213400303 its reverse (303004312), we get a palindrome (516404615).

The spelling of 213400303 in words is "two hundred thirteen million, four hundred thousand, three hundred three".