1311338 has 12 divisors (see below), whose sum is σ = 2288322. Its totient is φ = 561960.

The previous prime is 1311311. The next prime is 1311341. The reversal of 1311338 is 8331131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1270129 + 41209 = 1127^2 + 203^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 6593 + ... + 6788.

2^1311338 is an apocalyptic number.

1311338 is a deficient number, since it is larger than the sum of its proper divisors (976984).

1311338 is a wasteful number, since it uses less digits than its factorization.

1311338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13397 (or 13390 counting only the distinct ones).

The product of its digits is 216, while the sum is 20.

The square root of 1311338 is about 1145.1366730657. The cubic root of 1311338 is about 109.4556578381.

Adding to 1311338 its reverse (8331131), we get a palindrome (9642469).

The spelling of 1311338 in words is "one million, three hundred eleven thousand, three hundred thirty-eight".