313334521 has 4 divisors (see below), whose sum is σ = 313377012. Its totient is φ = 313292032.

The previous prime is 313334519. The next prime is 313334533. The reversal of 313334521 is 125433313.

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 16289296 + 297045225 = 4036^2 + 17235^2 .

It is a cyclic number.

It is not a de Polignac number, because 313334521 - 2¹ = 313334519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313334501) 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, 7000 + ... + 25993.

It is an arithmetic number, because the mean of its divisors is an integer number (78344253).

Almost surely, 2^313334521 is an apocalyptic number.

It is an amenable number.

313334521 is a deficient number, since it is larger than the sum of its proper divisors (42491).

313334521 is an equidigital number, since it uses as much as digits as its factorization.

313334521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42490.

The product of its digits is 3240, while the sum is 25.

The square root of 313334521 is about 17701.2576106897. The cubic root of 313334521 is about 679.2079308354.

Adding to 313334521 its reverse (125433313), we get a palindrome (438767834).

The spelling of 313334521 in words is "three hundred thirteen million, three hundred thirty-four thousand, five hundred twenty-one".