1311768 has 32 divisors (see below), whose sum is σ = 3644400. Its totient is φ = 437184.

The previous prime is 1311767. The next prime is 1311769. The reversal of 1311768 is 8671131.

It is an interprime number because it is at equal distance from previous prime (1311767) and next prime (1311769).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311767) 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, 2821 + ... + 3252.

2^1311768 is an apocalyptic number.

1311768 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1311768 is an abundant number, since it is smaller than the sum of its proper divisors (2332632).

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

1311768 is a wasteful number, since it uses less digits than its factorization.

1311768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6088 (or 6078 counting only the distinct ones).

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

The square root of 1311768 is about 1145.3244081918. The cubic root of 1311768 is about 109.4676203755.

1311768 divided by its sum of digits (27) gives a palindrome (48584).

Adding to 1311768 its reverse (8671131), we get a palindrome (9982899).

It can be divided in two parts, 13 and 11768, that added together give a triangular number (11781 = T₁₅₃).

The spelling of 1311768 in words is "one million, three hundred eleven thousand, seven hundred sixty-eight".