212231303 has 4 divisors (see below), whose sum is σ = 212265648. Its totient is φ = 212196960.

The previous prime is 212231287. The next prime is 212231317. The reversal of 212231303 is 303132212.

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 212231303 - 2⁴ = 212231287 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 (212231003) 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, 5051 + ... + 21212.

It is an arithmetic number, because the mean of its divisors is an integer number (53066412).

Almost surely, 2^212231303 is an apocalyptic number.

212231303 is a deficient number, since it is larger than the sum of its proper divisors (34345).

212231303 is an equidigital number, since it uses as much as digits as its factorization.

212231303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34344.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 212231303 is about 14568.1605908227. The cubic root of 212231303 is about 596.4899719539.

Adding to 212231303 its reverse (303132212), we get a palindrome (515363515).

Subtracting 212231303 from its reverse (303132212), we obtain a palindrome (90900909).

The spelling of 212231303 in words is "two hundred twelve million, two hundred thirty-one thousand, three hundred three".