212704291 has 2 divisors, whose sum is σ = 212704292. Its totient is φ = 212704290.

The previous prime is 212704277. The next prime is 212704319. The reversal of 212704291 is 192407212.

212704291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (212704319) can be obtained adding 212704291 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212704291 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212702291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106352145 + 106352146.

It is an arithmetic number, because the mean of its divisors is an integer number (106352146).

Almost surely, 2^212704291 is an apocalyptic number.

212704291 is a deficient number, since it is larger than the sum of its proper divisors (1).

212704291 is an equidigital number, since it uses as much as digits as its factorization.

212704291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 212704291 is about 14584.3851773052. The cubic root of 212704291 is about 596.9327644213.

The spelling of 212704291 in words is "two hundred twelve million, seven hundred four thousand, two hundred ninety-one".