312316663 has 4 divisors (see below), whose sum is σ = 312579648. Its totient is φ = 312053680.

The previous prime is 312316657. The next prime is 312316679. The reversal of 312316663 is 366613213.

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 312316663 - 2¹⁷ = 312185591 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 (312316603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129703 + ... + 132088.

It is an arithmetic number, because the mean of its divisors is an integer number (78144912).

Almost surely, 2^312316663 is an apocalyptic number.

312316663 is a deficient number, since it is larger than the sum of its proper divisors (262985).

312316663 is a wasteful number, since it uses less digits than its factorization.

312316663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262984.

The product of its digits is 11664, while the sum is 31.

The square root of 312316663 is about 17672.4832154398. The cubic root of 312316663 is about 678.4716706727.

Adding to 312316663 its reverse (366613213), we get a palindrome (678929876).

The spelling of 312316663 in words is "three hundred twelve million, three hundred sixteen thousand, six hundred sixty-three".