213201239 has 2 divisors, whose sum is σ = 213201240. Its totient is φ = 213201238.

The previous prime is 213201227. The next prime is 213201277. The reversal of 213201239 is 932102312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213201239 - 2⁸ = 213200983 is a prime.

It is a super-2 number, since 2×213201239² = 90909536622270242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213281239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106600619 + 106600620.

It is an arithmetic number, because the mean of its divisors is an integer number (106600620).

Almost surely, 2^213201239 is an apocalyptic number.

213201239 is a deficient number, since it is larger than the sum of its proper divisors (1).

213201239 is an equidigital number, since it uses as much as digits as its factorization.

213201239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 213201239 is about 14601.4122262198. The cubic root of 213201239 is about 597.3972807086.

The spelling of 213201239 in words is "two hundred thirteen million, two hundred one thousand, two hundred thirty-nine".