213111303 has 16 divisors (see below), whose sum is σ = 301222656. Its totient is φ = 133557120.

The previous prime is 213111271. The next prime is 213111323. The reversal of 213111303 is 303111312.

213111303 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 213111303 - 2⁵ = 213111271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213111323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52248 + ... + 56178.

It is an arithmetic number, because the mean of its divisors is an integer number (18826416).

Almost surely, 2^213111303 is an apocalyptic number.

213111303 is a deficient number, since it is larger than the sum of its proper divisors (88111353).

213111303 is a wasteful number, since it uses less digits than its factorization.

213111303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5014.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 213111303 is about 14598.3321992617. The cubic root of 213111303 is about 597.3132676285.

Adding to 213111303 its reverse (303111312), we get a palindrome (516222615).

Subtracting 213111303 from its reverse (303111312), we obtain a palindrome (90000009).

The spelling of 213111303 in words is "two hundred thirteen million, one hundred eleven thousand, three hundred three".