211303231303 has 4 divisors (see below), whose sum is σ = 211305466800. Its totient is φ = 211300995808.

The previous prime is 211303231273. The next prime is 211303231343. The reversal of 211303231303 is 303132303112.

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 211303231303 - 2³³ = 202713296711 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 (211303231343) 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, 969403 + ... + 1167196.

It is an arithmetic number, because the mean of its divisors is an integer number (52826366700).

Almost surely, 2^211303231303 is an apocalyptic number.

211303231303 is a deficient number, since it is larger than the sum of its proper divisors (2235497).

211303231303 is an equidigital number, since it uses as much as digits as its factorization.

211303231303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2235496.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 211303231303 its reverse (303132303112), we get a palindrome (514435534415).

The spelling of 211303231303 in words is "two hundred eleven billion, three hundred three million, two hundred thirty-one thousand, three hundred three".