1315973 has 4 divisors (see below), whose sum is σ = 1318668. Its totient is φ = 1313280.

The previous prime is 1315969. The next prime is 1316009. The reversal of 1315973 is 3795131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3795131 = 17 ⋅223243.

It can be written as a sum of positive squares in 2 ways, for example, as 964324 + 351649 = 982^2 + 593^2 .

It is a cyclic number.

It is not a de Polignac number, because 1315973 - 2² = 1315969 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386 + ... + 1667.

It is an arithmetic number, because the mean of its divisors is an integer number (329667).

2^1315973 is an apocalyptic number.

It is an amenable number.

1315973 is a deficient number, since it is larger than the sum of its proper divisors (2695).

1315973 is an equidigital number, since it uses as much as digits as its factorization.

1315973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2694.

The product of its digits is 2835, while the sum is 29.

The square root of 1315973 is about 1147.1586638299. The cubic root of 1315973 is about 109.5844653156.

The spelling of 1315973 in words is "one million, three hundred fifteen thousand, nine hundred seventy-three".