1331226 has 24 divisors (see below), whose sum is σ = 3106740. Its totient is φ = 409536.

The previous prime is 1331207. The next prime is 1331227. The reversal of 1331226 is 6221331.

It can be written as a sum of positive squares in 2 ways, for example, as 1320201 + 11025 = 1149^2 + 105^2 .

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 Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1331199 and 1331208.

It is not an unprimeable number, because it can be changed into a prime (1331227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2611 + ... + 3078.

2^1331226 is an apocalyptic number.

1331226 is an abundant number, since it is smaller than the sum of its proper divisors (1775514).

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

1331226 is a wasteful number, since it uses less digits than its factorization.

1331226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5710 (or 5707 counting only the distinct ones).

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

The square root of 1331226 is about 1153.7876754412. The cubic root of 1331226 is about 110.0062255430.

Adding to 1331226 its reverse (6221331), we get a palindrome (7552557).

The spelling of 1331226 in words is "one million, three hundred thirty-one thousand, two hundred twenty-six".