212703389 has 2 divisors, whose sum is σ = 212703390. Its totient is φ = 212703388.

The previous prime is 212703377. The next prime is 212703571. The reversal of 212703389 is 983307212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188595289 + 24108100 = 13733^2 + 4910^2 .

It is a cyclic number.

It is not a de Polignac number, because 212703389 - 2¹² = 212699293 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212703329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106351694 + 106351695.

It is an arithmetic number, because the mean of its divisors is an integer number (106351695).

Almost surely, 2^212703389 is an apocalyptic number.

It is an amenable number.

212703389 is a deficient number, since it is larger than the sum of its proper divisors (1).

212703389 is an equidigital number, since it uses as much as digits as its factorization.

212703389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 212703389 is about 14584.3542537885. The cubic root of 212703389 is about 596.9319206299.

The spelling of 212703389 in words is "two hundred twelve million, seven hundred three thousand, three hundred eighty-nine".