212340259 has 2 divisors, whose sum is σ = 212340260. Its totient is φ = 212340258.

The previous prime is 212340253. The next prime is 212340269. The reversal of 212340259 is 952043212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212340259 - 2¹⁷ = 212209187 is a prime.

It is not a weakly prime, because it can be changed into another prime (212340253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106170129 + 106170130.

It is an arithmetic number, because the mean of its divisors is an integer number (106170130).

Almost surely, 2^212340259 is an apocalyptic number.

212340259 is a deficient number, since it is larger than the sum of its proper divisors (1).

212340259 is an equidigital number, since it uses as much as digits as its factorization.

212340259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 212340259 is about 14571.8996359431. The cubic root of 212340259 is about 596.5920304813.

The spelling of 212340259 in words is "two hundred twelve million, three hundred forty thousand, two hundred fifty-nine".