312043 has 2 divisors, whose sum is σ = 312044. Its totient is φ = 312042.

The previous prime is 312031. The next prime is 312047. The reversal of 312043 is 340213.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312043 is a prime.

It is not a weakly prime, because it can be changed into another prime (312047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156021 + 156022.

It is an arithmetic number, because the mean of its divisors is an integer number (156022).

2³¹²⁰⁴³ is an apocalyptic number.

312043 is a deficient number, since it is larger than the sum of its proper divisors (1).

312043 is an equidigital number, since it uses as much as digits as its factorization.

312043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 312043 is about 558.6080915991. The cubic root of 312043 is about 67.8273445738.

Adding to 312043 its reverse (340213), we get a palindrome (652256).

The spelling of 312043 in words is "three hundred twelve thousand, forty-three", and thus it is an iban number.