312363217 has 4 divisors (see below), whose sum is σ = 312399360. Its totient is φ = 312327076.

The previous prime is 312363209. The next prime is 312363229. The reversal of 312363217 is 712363213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 712363213 = 3343 ⋅213091.

It is a cyclic number.

It is not a de Polignac number, because 312363217 - 2³ = 312363209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312363017) 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 3 ways as a sum of consecutive naturals, for example, 3384 + ... + 25222.

It is an arithmetic number, because the mean of its divisors is an integer number (78099840).

Almost surely, 2^312363217 is an apocalyptic number.

It is an amenable number.

312363217 is a deficient number, since it is larger than the sum of its proper divisors (36143).

312363217 is a wasteful number, since it uses less digits than its factorization.

312363217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36142.

The product of its digits is 4536, while the sum is 28.

The square root of 312363217 is about 17673.8002987473. The cubic root of 312363217 is about 678.5053800502.

It can be divided in two parts, 31236 and 3217, that added together give a triangular number (34453 = T₂₆₂).

The spelling of 312363217 in words is "three hundred twelve million, three hundred sixty-three thousand, two hundred seventeen".