212804357 has 2 divisors, whose sum is σ = 212804358. Its totient is φ = 212804356.

The previous prime is 212804321. The next prime is 212804393. The reversal of 212804357 is 753408212.

It is a balanced prime because it is at equal distance from previous prime (212804321) and next prime (212804393).

It can be written as a sum of positive squares in only one way, i.e., 111218116 + 101586241 = 10546^2 + 10079^2 .

It is a cyclic number.

It is not a de Polignac number, because 212804357 - 2²⁰ = 211755781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212809357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106402178 + 106402179.

It is an arithmetic number, because the mean of its divisors is an integer number (106402179).

Almost surely, 2^212804357 is an apocalyptic number.

It is an amenable number.

212804357 is a deficient number, since it is larger than the sum of its proper divisors (1).

212804357 is an equidigital number, since it uses as much as digits as its factorization.

212804357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 212804357 is about 14587.8153607728. The cubic root of 212804357 is about 597.0263580659.

The spelling of 212804357 in words is "two hundred twelve million, eight hundred four thousand, three hundred fifty-seven".