312216297 has 8 divisors (see below), whose sum is σ = 416456256. Its totient is φ = 208060272.

The previous prime is 312216251. The next prime is 312216299. The reversal of 312216297 is 792612213.

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

It is not a de Polignac number, because 312216297 - 2¹⁴ = 312199913 is a prime.

It is a super-2 number, since 2×312216297² = 194958032224784418, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (312216299) 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, 11718 + ... + 27599.

It is an arithmetic number, because the mean of its divisors is an integer number (52057032).

Almost surely, 2^312216297 is an apocalyptic number.

It is an amenable number.

312216297 is a deficient number, since it is larger than the sum of its proper divisors (104239959).

312216297 is a wasteful number, since it uses less digits than its factorization.

312216297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41967.

The product of its digits is 9072, while the sum is 33.

The square root of 312216297 is about 17669.6433750090. The cubic root of 312216297 is about 678.3989850607.

The spelling of 312216297 in words is "three hundred twelve million, two hundred sixteen thousand, two hundred ninety-seven".