313022231221 has 8 divisors (see below), whose sum is σ = 373293592704. Its totient is φ = 256639344720.

The previous prime is 313022231177. The next prime is 313022231251. The reversal of 313022231221 is 122132220313.

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 313022231221 - 2⁹ = 313022230709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 313022231192 and 313022231201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313022231251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 972118570 + ... + 972118891.

It is an arithmetic number, because the mean of its divisors is an integer number (46661699088).

Almost surely, 2^313022231221 is an apocalyptic number.

It is an amenable number.

313022231221 is a deficient number, since it is larger than the sum of its proper divisors (60271361483).

313022231221 is a wasteful number, since it uses less digits than its factorization.

313022231221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1944237491.

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

Adding to 313022231221 its reverse (122132220313), we get a palindrome (435154451534).

The spelling of 313022231221 in words is "three hundred thirteen billion, twenty-two million, two hundred thirty-one thousand, two hundred twenty-one".