1312443 has 24 divisors (see below), whose sum is σ = 2149056. Its totient is φ = 793800.

The previous prime is 1312411. The next prime is 1312459. The reversal of 1312443 is 3442131.

It is not a de Polignac number, because 1312443 - 2⁵ = 1312411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1312343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2428 + ... + 2918.

It is an arithmetic number, because the mean of its divisors is an integer number (89544).

2^1312443 is an apocalyptic number.

1312443 is a deficient number, since it is larger than the sum of its proper divisors (836613).

1312443 is an equidigital number, since it uses as much as digits as its factorization.

1312443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517 (or 505 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 1312443 is about 1145.6190466294. The cubic root of 1312443 is about 109.4863935054.

Adding to 1312443 its reverse (3442131), we get a palindrome (4754574).

The spelling of 1312443 in words is "one million, three hundred twelve thousand, four hundred forty-three".