312943 has 2 divisors, whose sum is σ = 312944. Its totient is φ = 312942.

The previous prime is 312941. The next prime is 312967. The reversal of 312943 is 349213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312943 - 2¹ = 312941 is a prime.

Together with 312941, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156471 + 156472.

It is an arithmetic number, because the mean of its divisors is an integer number (156472).

2³¹²⁹⁴³ is an apocalyptic number.

312943 is a deficient number, since it is larger than the sum of its proper divisors (1).

312943 is an equidigital number, since it uses as much as digits as its factorization.

312943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648, while the sum is 22.

The square root of 312943 is about 559.4130852957. The cubic root of 312943 is about 67.8924915945.

The spelling of 312943 in words is "three hundred twelve thousand, nine hundred forty-three".