313246321 has 4 divisors (see below), whose sum is σ = 313917552. Its totient is φ = 312575092.

The previous prime is 313246309. The next prime is 313246327. The reversal of 313246321 is 123642313.

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, and also an emirpimes, since its reverse is a distinct semiprime: 123642313 = 2011 ⋅61483.

It is a cyclic number.

It is not a de Polignac number, because 313246321 - 2¹³ = 313238129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313246327) 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, 334915 + ... + 335848.

It is an arithmetic number, because the mean of its divisors is an integer number (78479388).

Almost surely, 2^313246321 is an apocalyptic number.

It is an amenable number.

313246321 is a deficient number, since it is larger than the sum of its proper divisors (671231).

313246321 is an equidigital number, since it uses as much as digits as its factorization.

313246321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671230.

The product of its digits is 2592, while the sum is 25.

The square root of 313246321 is about 17698.7660869339. The cubic root of 313246321 is about 679.1441951607.

Adding to 313246321 its reverse (123642313), we get a palindrome (436888634).

The spelling of 313246321 in words is "three hundred thirteen million, two hundred forty-six thousand, three hundred twenty-one".