1331208 has 32 divisors (see below), whose sum is σ = 3698400. Its totient is φ = 443664.

The previous prime is 1331207. The next prime is 1331227. The reversal of 1331208 is 8021331.

It is a super-2 number, since 2×1331208² = 3544229478528, which contains 22 as substring.

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

It is a nialpdrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (1331207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2866 + ... + 3297.

It is an arithmetic number, because the mean of its divisors is an integer number (115575).

2^1331208 is an apocalyptic number.

1331208 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1331208 is an abundant number, since it is smaller than the sum of its proper divisors (2367192).

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

1331208 is a wasteful number, since it uses less digits than its factorization.

1331208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6178 (or 6168 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1331208 is about 1153.7798750195. The cubic root of 1331208 is about 110.0057297291.

Adding to 1331208 its reverse (8021331), we get a palindrome (9352539).

The spelling of 1331208 in words is "one million, three hundred thirty-one thousand, two hundred eight".