212340265 has 8 divisors (see below), whose sum is σ = 254904840. Its totient is φ = 169807872.

The previous prime is 212340259. The next prime is 212340269. The reversal of 212340265 is 562043212.

It can be written as a sum of positive squares in 4 ways, for example, as 19324816 + 193015449 = 4396^2 + 13893^2 .

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 212340265 - 2²⁷ = 78122537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212340269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10267 + ... + 23023.

It is an arithmetic number, because the mean of its divisors is an integer number (31863105).

Almost surely, 2^212340265 is an apocalyptic number.

It is an amenable number.

212340265 is a deficient number, since it is larger than the sum of its proper divisors (42564575).

212340265 is a wasteful number, since it uses less digits than its factorization.

212340265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16091.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 212340265 is about 14571.8998418188. The cubic root of 212340265 is about 596.5920361005.

Adding to 212340265 its reverse (562043212), we get a palindrome (774383477).

The spelling of 212340265 in words is "two hundred twelve million, three hundred forty thousand, two hundred sixty-five".