212878343 has 2 divisors, whose sum is σ = 212878344. Its totient is φ = 212878342.

The previous prime is 212878321. The next prime is 212878381. The reversal of 212878343 is 343878212.

It is an a-pointer prime, because the next prime (212878381) can be obtained adding 212878343 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212878343 - 2¹² = 212874247 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 212878297 and 212878306.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212878243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106439171 + 106439172.

It is an arithmetic number, because the mean of its divisors is an integer number (106439172).

Almost surely, 2^212878343 is an apocalyptic number.

212878343 is a deficient number, since it is larger than the sum of its proper divisors (1).

212878343 is an equidigital number, since it uses as much as digits as its factorization.

212878343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 38.

The square root of 212878343 is about 14590.3510238788. The cubic root of 212878343 is about 597.0955397228.

The spelling of 212878343 in words is "two hundred twelve million, eight hundred seventy-eight thousand, three hundred forty-three".