213260239 has 2 divisors, whose sum is σ = 213260240. Its totient is φ = 213260238.

The previous prime is 213260233. The next prime is 213260249. The reversal of 213260239 is 932062312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213260239 - 2³ = 213260231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213260231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106630119 + 106630120.

It is an arithmetic number, because the mean of its divisors is an integer number (106630120).

Almost surely, 2^213260239 is an apocalyptic number.

213260239 is a deficient number, since it is larger than the sum of its proper divisors (1).

213260239 is an equidigital number, since it uses as much as digits as its factorization.

213260239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 213260239 is about 14603.4324389850. The cubic root of 213260239 is about 597.4523823096.

The spelling of 213260239 in words is "two hundred thirteen million, two hundred sixty thousand, two hundred thirty-nine".