312918851 has 6 divisors (see below), whose sum is σ = 364007700. Its totient is φ = 268216116.

The previous prime is 312918839. The next prime is 312918889. The reversal of 312918851 is 158819213.

It is a de Polignac number, because none of the positive numbers 2^k-312918851 is a prime.

It is a super-2 number, since 2×312918851² = 195836414622320402, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (312918811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3193001 + ... + 3193098.

It is an arithmetic number, because the mean of its divisors is an integer number (60667950).

Almost surely, 2^312918851 is an apocalyptic number.

312918851 is a deficient number, since it is larger than the sum of its proper divisors (51088849).

312918851 is an equidigital number, since it uses as much as digits as its factorization.

312918851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6386113 (or 6386106 counting only the distinct ones).

The product of its digits is 17280, while the sum is 38.

The square root of 312918851 is about 17689.5124579509. The cubic root of 312918851 is about 678.9074518706.

The spelling of 312918851 in words is "three hundred twelve million, nine hundred eighteen thousand, eight hundred fifty-one".