312863 has 2 divisors, whose sum is σ = 312864. Its totient is φ = 312862.

The previous prime is 312857. The next prime is 312887. The reversal of 312863 is 368213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312863 - 2⁶ = 312799 is a prime.

It is a d-powerful number, because it can be written as 3 + 1 + 8⁵ + 2⁷ + 6⁷ + 3³ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156431 + 156432.

It is an arithmetic number, because the mean of its divisors is an integer number (156432).

2³¹²⁸⁶³ is an apocalyptic number.

312863 is a deficient number, since it is larger than the sum of its proper divisors (1).

312863 is an equidigital number, since it uses as much as digits as its factorization.

312863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 23.

The square root of 312863 is about 559.3415772138. The cubic root of 312863 is about 67.8867058101.

The spelling of 312863 in words is "three hundred twelve thousand, eight hundred sixty-three".