214310665969 has 3 divisors (see below), whose sum is σ = 214311128907. Its totient is φ = 214310203032.

The previous prime is 214310665949. The next prime is 214310665999. The reversal of 214310665969 is 969566013412.

It is a happy number.

The square root of 214310665969 is 462937.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 186783874225 + 27526791744 = 432185^2 + 165912^2 .

It is not a de Polignac number, because 214310665969 - 2²³ = 214302277361 is a prime.

It is a super-2 number, since 2×214310665969² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (214310665909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 231469 + ... + 694405.

It is an arithmetic number, because the mean of its divisors is an integer number (71437042969).

Almost surely, 2^214310665969 is an apocalyptic number.

214310665969 is the 462937-th square number.

214310665969 is the 231469-th centered octagonal number.

It is an amenable number.

214310665969 is a deficient number, since it is larger than the sum of its proper divisors (462938).

214310665969 is an frugal number, since it uses more digits than its factorization.

214310665969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925874 (or 462937 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 52.

The spelling of 214310665969 in words is "two hundred fourteen billion, three hundred ten million, six hundred sixty-five thousand, nine hundred sixty-nine".