1311968 has 24 divisors (see below), whose sum is σ = 2952432. Its totient is φ = 562176.

The previous prime is 1311967. The next prime is 1311971. The reversal of 1311968 is 8691131.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1311968.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2705 + ... + 3152.

It is an arithmetic number, because the mean of its divisors is an integer number (123018).

2^1311968 is an apocalyptic number.

It is an amenable number.

1311968 is an abundant number, since it is smaller than the sum of its proper divisors (1640464).

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

1311968 is an equidigital number, since it uses as much as digits as its factorization.

1311968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5874 (or 5866 counting only the distinct ones).

The product of its digits is 1296, while the sum is 29.

The square root of 1311968 is about 1145.4117163710. The cubic root of 1311968 is about 109.4731834556.

The spelling of 1311968 in words is "one million, three hundred eleven thousand, nine hundred sixty-eight".