312227917 has 8 divisors (see below), whose sum is σ = 315708224. Its totient is φ = 308756448.

The previous prime is 312227879. The next prime is 312227953. The reversal of 312227917 is 719722213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 4-Lehmer number, since φ(312227917) divides (312227917-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 312227917 - 2²³ = 303839309 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 (312227317) 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 7 ways as a sum of consecutive naturals, for example, 89233 + ... + 92665.

It is an arithmetic number, because the mean of its divisors is an integer number (39463528).

Almost surely, 2^312227917 is an apocalyptic number.

It is an amenable number.

312227917 is a deficient number, since it is larger than the sum of its proper divisors (3480307).

312227917 is a wasteful number, since it uses less digits than its factorization.

312227917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4419.

The product of its digits is 10584, while the sum is 34.

The square root of 312227917 is about 17669.9721844716. The cubic root of 312227917 is about 678.4074011262.

The spelling of 312227917 in words is "three hundred twelve million, two hundred twenty-seven thousand, nine hundred seventeen".