213011303 has 4 divisors (see below), whose sum is σ = 222272688. Its totient is φ = 203749920.

The previous prime is 213011287. The next prime is 213011311. The reversal of 213011303 is 303110312.

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 213011303 - 2⁴ = 213011287 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 (213011353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4630658 + ... + 4630703.

It is an arithmetic number, because the mean of its divisors is an integer number (55568172).

Almost surely, 2^213011303 is an apocalyptic number.

213011303 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

213011303 is a deficient number, since it is larger than the sum of its proper divisors (9261385).

213011303 is an equidigital number, since it uses as much as digits as its factorization.

213011303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9261384.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 213011303 is about 14594.9067485887. The cubic root of 213011303 is about 597.2198255771.

Adding to 213011303 its reverse (303110312), we get a palindrome (516121615).

Subtracting 213011303 from its reverse (303110312), we obtain a palindrome (90099009).

The spelling of 213011303 in words is "two hundred thirteen million, eleven thousand, three hundred three".