631222 has 8 divisors (see below), whose sum is σ = 977472. Its totient is φ = 305400.

The previous prime is 631187. The next prime is 631223. The reversal of 631222 is 222136.

631222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 631196 and 631205.

It is a congruent number.

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

631222 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, 5029 + ... + 5152.

It is an arithmetic number, because the mean of its divisors is an integer number (122184).

2⁶³¹²²² is an apocalyptic number.

631222 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

631222 is a deficient number, since it is larger than the sum of its proper divisors (346250).

631222 is a wasteful number, since it uses less digits than its factorization.

631222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10214.

The product of its digits is 144, while the sum is 16.

The square root of 631222 is about 794.4948080384. The cubic root of 631222 is about 85.7815802219.

Adding to 631222 its reverse (222136), we get a palindrome (853358).

The spelling of 631222 in words is "six hundred thirty-one thousand, two hundred twenty-two".