212713273 has 4 divisors (see below), whose sum is σ = 212755428. Its totient is φ = 212671120.

The previous prime is 212713261. The next prime is 212713297. The reversal of 212713273 is 372317212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36036009 + 176677264 = 6003^2 + 13292^2 .

It is a cyclic number.

It is not a de Polignac number, because 212713273 - 2⁹ = 212712761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212713243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12286 + ... + 24007.

It is an arithmetic number, because the mean of its divisors is an integer number (53188857).

Almost surely, 2^212713273 is an apocalyptic number.

It is an amenable number.

212713273 is a deficient number, since it is larger than the sum of its proper divisors (42155).

212713273 is an equidigital number, since it uses as much as digits as its factorization.

212713273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42154.

The product of its digits is 3528, while the sum is 28.

The square root of 212713273 is about 14584.6931061301. The cubic root of 212713273 is about 596.9411666568.

It can be divided in two parts, 2127 and 13273, that added together give a triangular number (15400 = T₁₇₅).

The spelling of 212713273 in words is "two hundred twelve million, seven hundred thirteen thousand, two hundred seventy-three".