631206 has 16 divisors (see below), whose sum is σ = 1402800. Its totient is φ = 210384.

The previous prime is 631187. The next prime is 631223. The reversal of 631206 is 602136.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5791 + ... + 5898.

It is an arithmetic number, because the mean of its divisors is an integer number (87675).

2⁶³¹²⁰⁶ is an apocalyptic number.

631206 is an abundant number, since it is smaller than the sum of its proper divisors (771594).

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

631206 is a wasteful number, since it uses less digits than its factorization.

631206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11700 (or 11694 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 631206 is about 794.4847386829. The cubic root of 631206 is about 85.7808554283.

The spelling of 631206 in words is "six hundred thirty-one thousand, two hundred six".