1311884 has 12 divisors (see below), whose sum is σ = 2623824. Its totient is φ = 562224.

The previous prime is 1311857. The next prime is 1311899. The reversal of 1311884 is 4881131.

1311884 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23399 + ... + 23454.

It is an arithmetic number, because the mean of its divisors is an integer number (218652).

2^1311884 is an apocalyptic number.

1311884 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1311884 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1311884 is a wasteful number, since it uses less digits than its factorization.

1311884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46864 (or 46862 counting only the distinct ones).

The product of its digits is 768, while the sum is 26.

The square root of 1311884 is about 1145.3750477464. The cubic root of 1311884 is about 109.4708470308.

The spelling of 1311884 in words is "one million, three hundred eleven thousand, eight hundred eighty-four".