1311384 has 32 divisors (see below), whose sum is σ = 3317040. Its totient is φ = 432000.

The previous prime is 1311383. The next prime is 1311403. The reversal of 1311384 is 4831131.

It is a Smith number, since the sum of its digits (21) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1311384.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2154 + ... + 2694.

2^1311384 is an apocalyptic number.

It is an amenable number.

1311384 is an abundant number, since it is smaller than the sum of its proper divisors (2005656).

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

1311384 is a wasteful number, since it uses less digits than its factorization.

1311384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651 (or 647 counting only the distinct ones).

The product of its digits is 288, while the sum is 21.

The square root of 1311384 is about 1145.1567578284. The cubic root of 1311384 is about 109.4569376763.

The spelling of 1311384 in words is "one million, three hundred eleven thousand, three hundred eighty-four".