313303222310221 has 32 divisors (see below), whose sum is σ = 378029741499648. Its totient is φ = 255802542013440.

The previous prime is 313303222310179. The next prime is 313303222310317. The reversal of 313303222310221 is 122013222303313.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 313303222310221 - 2⁷ = 313303222310093 is a prime.

It is a super-2 number, since 2×313303222310221² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 313303222310221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313303222310521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 425065221 + ... + 425801653.

It is an arithmetic number, because the mean of its divisors is an integer number (11813429421864).

Almost surely, 2^{313303222310221} is an apocalyptic number.

It is an amenable number.

313303222310221 is a deficient number, since it is larger than the sum of its proper divisors (64726519189427).

313303222310221 is a wasteful number, since it uses less digits than its factorization.

313303222310221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816901.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 313303222310221 its reverse (122013222303313), we get a palindrome (435316444613534).

The spelling of 313303222310221 in words is "three hundred thirteen trillion, three hundred three billion, two hundred twenty-two million, three hundred ten thousand, two hundred twenty-one".