630312 has 16 divisors (see below), whose sum is σ = 1575840. Its totient is φ = 210096.

The previous prime is 630307. The next prime is 630319. The reversal of 630312 is 213036.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 630291 and 630300.

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, 13108 + ... + 13155.

It is an arithmetic number, because the mean of its divisors is an integer number (98490).

2⁶³⁰³¹² is an apocalyptic number.

It is an amenable number.

630312 is an abundant number, since it is smaller than the sum of its proper divisors (945528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

630312 is a wasteful number, since it uses less digits than its factorization.

630312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26272 (or 26268 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 630312 is about 793.9219105177. The cubic root of 630312 is about 85.7403381125.

Adding to 630312 its reverse (213036), we get a palindrome (843348).

The spelling of 630312 in words is "six hundred thirty thousand, three hundred twelve".