631122 has 16 divisors (see below), whose sum is σ = 1270080. Its totient is φ = 209072.

The previous prime is 631121. The next prime is 631133. The reversal of 631122 is 221136.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (631121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1579 + ... + 1937.

It is an arithmetic number, because the mean of its divisors is an integer number (79380).

2⁶³¹¹²² is an apocalyptic number.

631122 is an abundant number, since it is smaller than the sum of its proper divisors (638958).

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

631122 is a wasteful number, since it uses less digits than its factorization.

631122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657.

The product of its digits is 72, while the sum is 15.

The square root of 631122 is about 794.4318724724. The cubic root of 631122 is about 85.7770500613. Note that the first 3 decimals are identical.

Adding to 631122 its reverse (221136), we get a palindrome (852258).

The spelling of 631122 in words is "six hundred thirty-one thousand, one hundred twenty-two".