1311211 has 8 divisors (see below), whose sum is σ = 1440000. Its totient is φ = 1184040.

The previous prime is 1311181. The next prime is 1311217. The reversal of 1311211 is 1121131.

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

It is not a de Polignac number, because 1311211 - 2¹¹ = 1309163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1890 + ... + 2488.

It is an arithmetic number, because the mean of its divisors is an integer number (180000).

2^1311211 is an apocalyptic number.

1311211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1311211 is a deficient number, since it is larger than the sum of its proper divisors (128789).

1311211 is a wasteful number, since it uses less digits than its factorization.

1311211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809.

The product of its digits is 6, while the sum is 10.

The square root of 1311211 is about 1145.0812198268. The cubic root of 1311211 is about 109.4521242164.

Adding to 1311211 its reverse (1121131), we get a palindrome (2432342).

The spelling of 1311211 in words is "one million, three hundred eleven thousand, two hundred eleven".