212317057 has 2 divisors, whose sum is σ = 212317058. Its totient is φ = 212317056.

The previous prime is 212317043. The next prime is 212317081. The reversal of 212317057 is 750713212.

212317057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130667761 + 81649296 = 11431^2 + 9036^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212317057 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212317657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106158528 + 106158529.

It is an arithmetic number, because the mean of its divisors is an integer number (106158529).

Almost surely, 2^212317057 is an apocalyptic number.

It is an amenable number.

212317057 is a deficient number, since it is larger than the sum of its proper divisors (1).

212317057 is an equidigital number, since it uses as much as digits as its factorization.

212317057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 212317057 is about 14571.1034928725. The cubic root of 212317057 is about 596.5703002129.

The spelling of 212317057 in words is "two hundred twelve million, three hundred seventeen thousand, fifty-seven".