313041221321 has 4 divisors (see below), whose sum is σ = 315114342144. Its totient is φ = 310968100500.

The previous prime is 313041221281. The next prime is 313041221341. The reversal of 313041221321 is 123122140313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313041221321 is a prime.

It is a super-2 number, since 2×313041221321² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313041221341) 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, 1036560185 + ... + 1036560486.

It is an arithmetic number, because the mean of its divisors is an integer number (78778585536).

Almost surely, 2^313041221321 is an apocalyptic number.

It is an amenable number.

313041221321 is a deficient number, since it is larger than the sum of its proper divisors (2073120823).

313041221321 is a wasteful number, since it uses less digits than its factorization.

313041221321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2073120822.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 313041221321 its reverse (123122140313), we get a palindrome (436163361634).

The spelling of 313041221321 in words is "three hundred thirteen billion, forty-one million, two hundred twenty-one thousand, three hundred twenty-one".