1312297 has 4 divisors (see below), whose sum is σ = 1499776. Its totient is φ = 1124820.

The previous prime is 1312277. The next prime is 1312301. The reversal of 1312297 is 7922131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1312297 - 2⁷ = 1312169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312237) 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, 93729 + ... + 93742.

It is an arithmetic number, because the mean of its divisors is an integer number (374944).

2^1312297 is an apocalyptic number.

It is an amenable number.

1312297 is a deficient number, since it is larger than the sum of its proper divisors (187479).

1312297 is an equidigital number, since it uses as much as digits as its factorization.

1312297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187478.

The product of its digits is 756, while the sum is 25.

The square root of 1312297 is about 1145.5553238495. Note that the first 3 decimals coincide. The cubic root of 1312297 is about 109.4823334926.

The spelling of 1312297 in words is "one million, three hundred twelve thousand, two hundred ninety-seven".