2631222 has 48 divisors (see below), whose sum is σ = 6329232. Its totient is φ = 783360.

The previous prime is 2631221. The next prime is 2631241. The reversal of 2631222 is 2221362.

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

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

It is a d-powerful number, because it can be written as 2⁵ + 6² + 3¹² + 1 + 2⁹ + 2¹¹ + 2²¹ .

It is a junction number, because it is equal to n+sod(n) for n = 2631195 and 2631204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2631221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19138 + ... + 19274.

It is an arithmetic number, because the mean of its divisors is an integer number (131859).

2^2631222 is an apocalyptic number.

2631222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2631222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3164616).

2631222 is an abundant number, since it is smaller than the sum of its proper divisors (3698010).

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

2631222 is a wasteful number, since it uses less digits than its factorization.

2631222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253 (or 250 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 2631222 is about 1622.1041890088. The cubic root of 2631222 is about 138.0551134620.

Adding to 2631222 its reverse (2221362), we get a palindrome (4852584).

It can be divided in two parts, 263 and 1222, that added together give a triangular number (1485 = T₅₄).

The spelling of 2631222 in words is "two million, six hundred thirty-one thousand, two hundred twenty-two".