313633321 has 4 divisors (see below), whose sum is σ = 318949200. Its totient is φ = 308317444.

The previous prime is 313633297. The next prime is 313633337. The reversal of 313633321 is 123336313.

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 313633321 - 2⁷ = 313633193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313633921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2657851 + ... + 2657968.

It is an arithmetic number, because the mean of its divisors is an integer number (79737300).

Almost surely, 2^313633321 is an apocalyptic number.

It is an amenable number.

313633321 is a deficient number, since it is larger than the sum of its proper divisors (5315879).

313633321 is an equidigital number, since it uses as much as digits as its factorization.

313633321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5315878.

The product of its digits is 2916, while the sum is 25.

The square root of 313633321 is about 17709.6956777919. The cubic root of 313633321 is about 679.4237628394.

Adding to 313633321 its reverse (123336313), we get a palindrome (436969634).

The spelling of 313633321 in words is "three hundred thirteen million, six hundred thirty-three thousand, three hundred twenty-one".