313103122131221 has 8 divisors (see below), whose sum is σ = 315389314431360. Its totient is φ = 310816940962528.

The previous prime is 313103122131199. The next prime is 313103122131227. The reversal of 313103122131221 is 122131221301313.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313103122131221 is a prime.

It is a super-2 number, since 2×313103122131221² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313103122131227) 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, 58603670 + ... + 63722808.

It is an arithmetic number, because the mean of its divisors is an integer number (39423664303920).

Almost surely, 2^{313103122131221} is an apocalyptic number.

It is an amenable number.

313103122131221 is a deficient number, since it is larger than the sum of its proper divisors (2286192300139).

313103122131221 is a wasteful number, since it uses less digits than its factorization.

313103122131221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5565723.

The product of its (nonzero) digits is 1296, while the sum is 26.

Adding to 313103122131221 its reverse (122131221301313), we get a palindrome (435234343432534).

The spelling of 313103122131221 in words is "three hundred thirteen trillion, one hundred three billion, one hundred twenty-two million, one hundred thirty-one thousand, two hundred twenty-one".