311221322200223 has 8 divisors (see below), whose sum is σ = 319196660480880. Its totient is φ = 303264296982720.

The previous prime is 311221322200219. The next prime is 311221322200237. The reversal of 311221322200223 is 322002223122113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 311221322200223 - 2² = 311221322200219 is a prime.

It is a super-2 number, since 2×311221322200223² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311221322200192 and 311221322200201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311221322100223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4578231365 + ... + 4578299342.

It is an arithmetic number, because the mean of its divisors is an integer number (39899582560110).

Almost surely, 2^{311221322200223} is an apocalyptic number.

311221322200223 is a deficient number, since it is larger than the sum of its proper divisors (7975338280657).

311221322200223 is an equidigital number, since it uses as much as digits as its factorization.

311221322200223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9156531577.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 311221322200223 its reverse (322002223122113), we get a palindrome (633223545322336).

The spelling of 311221322200223 in words is "three hundred eleven trillion, two hundred twenty-one billion, three hundred twenty-two million, two hundred thousand, two hundred twenty-three".