1320343 has 2 divisors, whose sum is σ = 1320344. Its totient is φ = 1320342.

The previous prime is 1320337. The next prime is 1320353. The reversal of 1320343 is 3430231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1320343 - 2¹⁷ = 1189271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660171 + 660172.

It is an arithmetic number, because the mean of its divisors is an integer number (660172).

2^1320343 is an apocalyptic number.

1320343 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320343 is an equidigital number, since it uses as much as digits as its factorization.

1320343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 1320343 is about 1149.0617912018. The cubic root of 1320343 is about 109.7056316836.

Adding to 1320343 its reverse (3430231), we get a palindrome (4750574).

The spelling of 1320343 in words is "one million, three hundred twenty thousand, three hundred forty-three".