310223312221 has 4 divisors (see below), whose sum is σ = 310234712572. Its totient is φ = 310211911872.

The previous prime is 310223312213. The next prime is 310223312233. The reversal of 310223312221 is 122213322013.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122213322013 = 7177 ⋅17028469.

It can be written as a sum of positive squares in 2 ways, for example, as 149622749721 + 160600562500 = 386811^2 + 400750^2 .

It is a cyclic number.

It is not a de Polignac number, because 310223312221 - 2³ = 310223312213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 310223312192 and 310223312201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (310223312281) 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, 5659260 + ... + 5713813.

It is an arithmetic number, because the mean of its divisors is an integer number (77558678143).

Almost surely, 2^310223312221 is an apocalyptic number.

It is an amenable number.

310223312221 is a deficient number, since it is larger than the sum of its proper divisors (11400351).

310223312221 is a wasteful number, since it uses less digits than its factorization.

310223312221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11400350.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 310223312221 its reverse (122213322013), we get a palindrome (432436634234).

The spelling of 310223312221 in words is "three hundred ten billion, two hundred twenty-three million, three hundred twelve thousand, two hundred twenty-one".