212886317 has 8 divisors (see below), whose sum is σ = 256104000. Its totient is φ = 172869984.

The previous prime is 212886299. The next prime is 212886343. The reversal of 212886317 is 713688212.

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

It is not a de Polignac number, because 212886317 - 2⁸ = 212886061 is a prime.

It is a super-4 number, since 4×212886317⁴ (a number of 34 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212886347) 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, 800192 + ... + 800457.

It is an arithmetic number, because the mean of its divisors is an integer number (32013000).

Almost surely, 2^212886317 is an apocalyptic number.

It is an amenable number.

212886317 is a deficient number, since it is larger than the sum of its proper divisors (43217683).

212886317 is a wasteful number, since it uses less digits than its factorization.

212886317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1600675.

The product of its digits is 32256, while the sum is 38.

The square root of 212886317 is about 14590.6242841079. The cubic root of 212886317 is about 597.1029949674.

The spelling of 212886317 in words is "two hundred twelve million, eight hundred eighty-six thousand, three hundred seventeen".