1312273 has 4 divisors (see below), whose sum is σ = 1381360. Its totient is φ = 1243188.

The previous prime is 1312237. The next prime is 1312277. The reversal of 1312273 is 3722131.

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 1312273 - 2¹³ = 1304081 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 69067 = 1312273 / (1 + 3 + 1 + 2 + 2 + 7 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1312273.

It is not an unprimeable number, because it can be changed into a prime (1312277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34515 + ... + 34552.

It is an arithmetic number, because the mean of its divisors is an integer number (345340).

2^1312273 is an apocalyptic number.

It is an amenable number.

1312273 is a deficient number, since it is larger than the sum of its proper divisors (69087).

1312273 is an equidigital number, since it uses as much as digits as its factorization.

1312273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69086.

The product of its digits is 252, while the sum is 19.

The square root of 1312273 is about 1145.5448485328. The cubic root of 1312273 is about 109.4816660644.

The spelling of 1312273 in words is "one million, three hundred twelve thousand, two hundred seventy-three".