1311678 has 12 divisors (see below), whose sum is σ = 2842008. Its totient is φ = 437220.

The previous prime is 1311643. The next prime is 1311689. The reversal of 1311678 is 8761131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36418 + ... + 36453.

It is an arithmetic number, because the mean of its divisors is an integer number (236834).

2^1311678 is an apocalyptic number.

1311678 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1311678 is an abundant number, since it is smaller than the sum of its proper divisors (1530330).

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

1311678 is a wasteful number, since it uses less digits than its factorization.

1311678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72879 (or 72876 counting only the distinct ones).

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

The square root of 1311678 is about 1145.2851173398. The cubic root of 1311678 is about 109.4651168049.

The spelling of 1311678 in words is "one million, three hundred eleven thousand, six hundred seventy-eight".