1312943 has 8 divisors (see below), whose sum is σ = 1389696. Its totient is φ = 1238400.

The previous prime is 1312937. The next prime is 1312951. The reversal of 1312943 is 3492131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 755 + ... + 1787.

It is an arithmetic number, because the mean of its divisors is an integer number (173712).

2^1312943 is an apocalyptic number.

1312943 is a deficient number, since it is larger than the sum of its proper divisors (76753).

1312943 is a wasteful number, since it uses less digits than its factorization.

1312943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105.

The product of its digits is 648, while the sum is 23.

The square root of 1312943 is about 1145.8372484782. The cubic root of 1312943 is about 109.5002953781.

The spelling of 1312943 in words is "one million, three hundred twelve thousand, nine hundred forty-three".