318863 has 2 divisors, whose sum is σ = 318864. Its totient is φ = 318862.

The previous prime is 318841. The next prime is 318881. The reversal of 318863 is 368813.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 318863 - 2¹⁰ = 317839 is a prime.

It is a super-2 number, since 2×318863² = 203347225538, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159431 + 159432.

It is an arithmetic number, because the mean of its divisors is an integer number (159432).

2³¹⁸⁸⁶³ is an apocalyptic number.

318863 is a deficient number, since it is larger than the sum of its proper divisors (1).

318863 is an equidigital number, since it uses as much as digits as its factorization.

318863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 29.

The square root of 318863 is about 564.6795551461. The cubic root of 318863 is about 68.3179316204.

The spelling of 318863 in words is "three hundred eighteen thousand, eight hundred sixty-three".