1331743 has 4 divisors (see below), whose sum is σ = 1522000. Its totient is φ = 1141488.

The previous prime is 1331719. The next prime is 1331749. The reversal of 1331743 is 3471331.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1331743 - 2⁵ = 1331711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331749) 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, 95118 + ... + 95131.

It is an arithmetic number, because the mean of its divisors is an integer number (380500).

2^1331743 is an apocalyptic number.

1331743 is a deficient number, since it is larger than the sum of its proper divisors (190257).

1331743 is an equidigital number, since it uses as much as digits as its factorization.

1331743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190256.

The product of its digits is 756, while the sum is 22.

The square root of 1331743 is about 1154.0116983809. The cubic root of 1331743 is about 110.0204645121.

The spelling of 1331743 in words is "one million, three hundred thirty-one thousand, seven hundred forty-three".