212316251817 has 8 divisors (see below), whose sum is σ = 283425750720. Its totient is φ = 141375460400.

The previous prime is 212316251813. The next prime is 212316251863. The reversal of 212316251817 is 718152613212.

212316251817 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 212316251817 - 2² = 212316251813 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212316251813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42173934 + ... + 42178967.

It is an arithmetic number, because the mean of its divisors is an integer number (35428218840).

Almost surely, 2^212316251817 is an apocalyptic number.

It is an amenable number.

212316251817 is a deficient number, since it is larger than the sum of its proper divisors (71109498903).

212316251817 is an equidigital number, since it uses as much as digits as its factorization.

212316251817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84353743.

The product of its digits is 40320, while the sum is 39.

The spelling of 212316251817 in words is "two hundred twelve billion, three hundred sixteen million, two hundred fifty-one thousand, eight hundred seventeen".