1340383 has 4 divisors (see below), whose sum is σ = 1462248. Its totient is φ = 1218520.

The previous prime is 1340369. The next prime is 1340387. The reversal of 1340383 is 3830431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3830431 = 11 ⋅348221.

It is a cyclic number.

It is not a de Polignac number, because 1340383 - 2¹⁷ = 1209311 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340387) 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, 60916 + ... + 60937.

It is an arithmetic number, because the mean of its divisors is an integer number (365562).

2^1340383 is an apocalyptic number.

1340383 is a deficient number, since it is larger than the sum of its proper divisors (121865).

1340383 is a wasteful number, since it uses less digits than its factorization.

1340383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121864.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1340383 is about 1157.7491092633. The cubic root of 1340383 is about 110.2578798124.

The spelling of 1340383 in words is "one million, three hundred forty thousand, three hundred eighty-three".