211223131303 has 4 divisors (see below), whose sum is σ = 211911154840. Its totient is φ = 210535107768.

The previous prime is 211223131261. The next prime is 211223131321. The reversal of 211223131303 is 303131322112.

211223131303 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211223131303 is a prime.

It is a super-2 number, since 2×211223131303² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211223131373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344011308 + ... + 344011921.

It is an arithmetic number, because the mean of its divisors is an integer number (52977788710).

Almost surely, 2^211223131303 is an apocalyptic number.

211223131303 is a deficient number, since it is larger than the sum of its proper divisors (688023537).

211223131303 is an equidigital number, since it uses as much as digits as its factorization.

211223131303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688023536.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 211223131303 its reverse (303131322112), we get a palindrome (514354453415).

The spelling of 211223131303 in words is "two hundred eleven billion, two hundred twenty-three million, one hundred thirty-one thousand, three hundred three".