313001321 has 4 divisors (see below), whose sum is σ = 323794500. Its totient is φ = 302208144.

The previous prime is 313001303. The next prime is 313001333. The reversal of 313001321 is 123100313.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 182790400 + 130210921 = 13520^2 + 11411^2 .

It is a cyclic number.

It is not a de Polignac number, because 313001321 - 2¹⁰ = 313000297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 313001296 and 313001305.

It is not an unprimeable number, because it can be changed into a prime (313001621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5396546 + ... + 5396603.

It is an arithmetic number, because the mean of its divisors is an integer number (80948625).

Almost surely, 2^313001321 is an apocalyptic number.

It is an amenable number.

313001321 is a deficient number, since it is larger than the sum of its proper divisors (10793179).

313001321 is a wasteful number, since it uses less digits than its factorization.

313001321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10793178.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 313001321 is about 17691.8433465821. The cubic root of 313001321 is about 678.9670888227.

Adding to 313001321 its reverse (123100313), we get a palindrome (436101634).

The spelling of 313001321 in words is "three hundred thirteen million, one thousand, three hundred twenty-one".