631612 has 12 divisors (see below), whose sum is σ = 1111320. Its totient is φ = 314096.

The previous prime is 631597. The next prime is 631613. The reversal of 631612 is 216136.

631612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 631612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631613) by changing a digit.

631612 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 783 + ... + 1369.

It is an arithmetic number, because the mean of its divisors is an integer number (92610).

2⁶³¹⁶¹² is an apocalyptic number.

It is an amenable number.

631612 is a deficient number, since it is larger than the sum of its proper divisors (479708).

631612 is a wasteful number, since it uses less digits than its factorization.

631612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860 (or 858 counting only the distinct ones).

The product of its digits is 216, while the sum is 19.

The square root of 631612 is about 794.7402091250. The cubic root of 631612 is about 85.7992432779.

Adding to 631612 its reverse (216136), we get a palindrome (847748).

It can be divided in two parts, 6316 and 12, that added together give a triangular number (6328 = T₁₁₂).

The spelling of 631612 in words is "six hundred thirty-one thousand, six hundred twelve".