1222631 has 8 divisors (see below), whose sum is σ = 1297200. Its totient is φ = 1149120.

The previous prime is 1222603. The next prime is 1222633. The reversal of 1222631 is 1362221.

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

It is not a de Polignac number, because 1222631 - 2⁶ = 1222567 is a prime.

It is a super-2 number, since 2×1222631² = 2989653124322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4211 + ... + 4491.

It is an arithmetic number, because the mean of its divisors is an integer number (162150).

2^1222631 is an apocalyptic number.

1222631 is a deficient number, since it is larger than the sum of its proper divisors (74569).

1222631 is a wasteful number, since it uses less digits than its factorization.

1222631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529.

The product of its digits is 144, while the sum is 17.

The square root of 1222631 is about 1105.7264580356. The cubic root of 1222631 is about 106.9297293872.

Adding to 1222631 its reverse (1362221), we get a palindrome (2584852).

The spelling of 1222631 in words is "one million, two hundred twenty-two thousand, six hundred thirty-one".