1315243 has 2 divisors, whose sum is σ = 1315244. Its totient is φ = 1315242.

The previous prime is 1315231. The next prime is 1315253. The reversal of 1315243 is 3425131.

It is a strong prime.

It is an emirp because it is prime and its reverse (3425131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1315243 - 2⁵ = 1315211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1315243.

It is not a weakly prime, because it can be changed into another prime (1315213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657621 + 657622.

It is an arithmetic number, because the mean of its divisors is an integer number (657622).

2^1315243 is an apocalyptic number.

1315243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315243 is an equidigital number, since it uses as much as digits as its factorization.

1315243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 360, while the sum is 19.

The square root of 1315243 is about 1146.8404422586. The cubic root of 1315243 is about 109.5641985735.

The spelling of 1315243 in words is "one million, three hundred fifteen thousand, two hundred forty-three".