318242663 has 4 divisors (see below), whose sum is σ = 318327240. Its totient is φ = 318158088.

The previous prime is 318242657. The next prime is 318242681. The reversal of 318242663 is 366242813.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 318242663 - 2¹⁶ = 318177127 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 (318242653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36368 + ... + 44261.

It is an arithmetic number, because the mean of its divisors is an integer number (79581810).

Almost surely, 2^318242663 is an apocalyptic number.

318242663 is a deficient number, since it is larger than the sum of its proper divisors (84577).

318242663 is an equidigital number, since it uses as much as digits as its factorization.

318242663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84576.

The product of its digits is 41472, while the sum is 35.

The square root of 318242663 is about 17839.3571352782. The cubic root of 318242663 is about 682.7359946362.

The spelling of 318242663 in words is "three hundred eighteen million, two hundred forty-two thousand, six hundred sixty-three".