211323312303 has 16 divisors (see below), whose sum is σ = 284265000960. Its totient is φ = 139634119296.

The previous prime is 211323312257. The next prime is 211323312311. The reversal of 211323312303 is 303213323112.

It is not a de Polignac number, because 211323312303 - 2⁹ = 211323311791 is a prime.

It is a super-2 number, since 2×211323312303² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211323312703) 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, 109576 + ... + 659282.

It is an arithmetic number, because the mean of its divisors is an integer number (17766562560).

Almost surely, 2^211323312303 is an apocalyptic number.

211323312303 is a deficient number, since it is larger than the sum of its proper divisors (72941688657).

211323312303 is a wasteful number, since it uses less digits than its factorization.

211323312303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550846.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 211323312303 its reverse (303213323112), we get a palindrome (514536635415).

The spelling of 211323312303 in words is "two hundred eleven billion, three hundred twenty-three million, three hundred twelve thousand, three hundred three".