1311867 has 12 divisors (see below), whose sum is σ = 1922544. Its totient is φ = 861840.

The previous prime is 1311857. The next prime is 1311899. The reversal of 1311867 is 7681131.

It is not a de Polignac number, because 1311867 - 2¹² = 1307771 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1311867.

It is not an unprimeable number, because it can be changed into a prime (1311847) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 388 + ... + 1665.

It is an arithmetic number, because the mean of its divisors is an integer number (160212).

2^1311867 is an apocalyptic number.

1311867 is a deficient number, since it is larger than the sum of its proper divisors (610677).

1311867 is a wasteful number, since it uses less digits than its factorization.

1311867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2130 (or 2127 counting only the distinct ones).

The product of its digits is 1008, while the sum is 27.

The square root of 1311867 is about 1145.3676265724. The cubic root of 1311867 is about 109.4703741708.

Adding to 1311867 its reverse (7681131), we get a palindrome (8992998).

The spelling of 1311867 in words is "one million, three hundred eleven thousand, eight hundred sixty-seven".