630231 has 8 divisors (see below), whose sum is σ = 960384. Its totient is φ = 360120.

The previous prime is 630229. The next prime is 630247. The reversal of 630231 is 132036.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 630231 - 2¹ = 630229 is a prime.

It is a super-2 number, since 2×630231² = 794382226722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (15) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

630231 is a modest number, since divided by 231 gives 63 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 630231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630281) 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 7 ways as a sum of consecutive naturals, for example, 14985 + ... + 15026.

It is an arithmetic number, because the mean of its divisors is an integer number (120048).

2⁶³⁰²³¹ is an apocalyptic number.

630231 is a deficient number, since it is larger than the sum of its proper divisors (330153).

630231 is a wasteful number, since it uses less digits than its factorization.

630231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30021.

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

The square root of 630231 is about 793.8708963049. The cubic root of 630231 is about 85.7366651881.

Adding to 630231 its reverse (132036), we get a palindrome (762267).

It can be divided in two parts, 630 and 231, that multiplied together give a triangular number (145530 = T₅₃₉).

The spelling of 630231 in words is "six hundred thirty thousand, two hundred thirty-one".