631233 has 10 divisors (see below), whose sum is σ = 943074. Its totient is φ = 420768.

The previous prime is 631229. The next prime is 631247. The reversal of 631233 is 332136.

It is a happy number.

631233 is a `hidden beast` number, since 631 + 2 + 33 = 666.

It can be written as a sum of positive squares in only one way, i.e., 627264 + 3969 = 792^2 + 63^2 .

It is not a de Polignac number, because 631233 - 2² = 631229 is a prime.

631233 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631223) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3816 + ... + 3977.

2⁶³¹²³³ is an apocalyptic number.

It is an amenable number.

631233 is a deficient number, since it is larger than the sum of its proper divisors (311841).

631233 is an equidigital number, since it uses as much as digits as its factorization.

631233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7805 (or 7796 counting only the distinct ones).

The product of its digits is 324, while the sum is 18.

The square root of 631233 is about 794.5017306463. The cubic root of 631233 is about 85.7820785103.

Adding to 631233 its reverse (332136), we get a palindrome (963369).

It can be divided in two parts, 63 and 1233, that added together give a 4-th power (1296 = 6⁴).

The spelling of 631233 in words is "six hundred thirty-one thousand, two hundred thirty-three".