311221124223 has 16 divisors (see below), whose sum is σ = 422180749536. Its totient is φ = 203877843840.

The previous prime is 311221124219. The next prime is 311221124251. The reversal of 311221124223 is 322421122113.

It is not a de Polignac number, because 311221124223 - 2² = 311221124219 is a prime.

It is a super-3 number, since 3×311221124223³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 311221124193 and 311221124202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311221124273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 654040 + ... + 1024797.

It is an arithmetic number, because the mean of its divisors is an integer number (26386296846).

Almost surely, 2^311221124223 is an apocalyptic number.

311221124223 is a deficient number, since it is larger than the sum of its proper divisors (110959625313).

311221124223 is a wasteful number, since it uses less digits than its factorization.

311221124223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679914.

The product of its digits is 1152, while the sum is 24.

Adding to 311221124223 its reverse (322421122113), we get a palindrome (633642246336).

The spelling of 311221124223 in words is "three hundred eleven billion, two hundred twenty-one million, one hundred twenty-four thousand, two hundred twenty-three".