313013321 has 4 divisors (see below), whose sum is σ = 313075152. Its totient is φ = 312951492.

The previous prime is 313013287. The next prime is 313013329. The reversal of 313013321 is 123310313.

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 not a de Polignac number, because 313013321 - 2⁶ = 313013257 is a prime.

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 313013321.

It is not an unprimeable number, because it can be changed into a prime (313013329) 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, 22571 + ... + 33696.

It is an arithmetic number, because the mean of its divisors is an integer number (78268788).

Almost surely, 2^313013321 is an apocalyptic number.

It is an amenable number.

313013321 is a deficient number, since it is larger than the sum of its proper divisors (61831).

313013321 is an equidigital number, since it uses as much as digits as its factorization.

313013321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61830.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 313013321 is about 17692.1824826673. The cubic root of 313013321 is about 678.9757655709.

Adding to 313013321 its reverse (123310313), we get a palindrome (436323634).

The spelling of 313013321 in words is "three hundred thirteen million, thirteen thousand, three hundred twenty-one".