630313 has 4 divisors (see below), whose sum is σ = 640708. Its totient is φ = 619920.

The previous prime is 630307. The next prime is 630319. The reversal of 630313 is 313036.

630313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (630307) and next prime (630319).

It can be written as a sum of positive squares in 2 ways, for example, as 205209 + 425104 = 453^2 + 652^2 .

It is a cyclic number.

It is not a de Polignac number, because 630313 - 2⁵ = 630281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (630319) 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, 5106 + ... + 5227.

It is an arithmetic number, because the mean of its divisors is an integer number (160177).

2⁶³⁰³¹³ is an apocalyptic number.

It is an amenable number.

630313 is a deficient number, since it is larger than the sum of its proper divisors (10395).

630313 is a wasteful number, since it uses less digits than its factorization.

630313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10394.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 630313 is about 793.9225403023. The cubic root of 630313 is about 85.7403834552.

Adding to 630313 its reverse (313036), we get a palindrome (943349).

The spelling of 630313 in words is "six hundred thirty thousand, three hundred thirteen".