1315943 has 2 divisors, whose sum is σ = 1315944. Its totient is φ = 1315942.

The previous prime is 1315931. The next prime is 1315949. The reversal of 1315943 is 3495131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1315943 - 2⁴ = 1315927 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1315949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657971 + 657972.

It is an arithmetic number, because the mean of its divisors is an integer number (657972).

2^1315943 is an apocalyptic number.

1315943 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315943 is an equidigital number, since it uses as much as digits as its factorization.

1315943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1620, while the sum is 26.

The square root of 1315943 is about 1147.1455879704. The cubic root of 1315943 is about 109.5836325835.

The spelling of 1315943 in words is "one million, three hundred fifteen thousand, nine hundred forty-three".