213488239 has 2 divisors, whose sum is σ = 213488240. Its totient is φ = 213488238.

The previous prime is 213488221. The next prime is 213488287. The reversal of 213488239 is 932884312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213488239 - 2²¹ = 211391087 is a prime.

It is a super-2 number, since 2×213488239² = 91154456382642242, which contains 22 as substring.

It is equal to p_11783479 and since 213488239 and 11783479 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213488299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106744119 + 106744120.

It is an arithmetic number, because the mean of its divisors is an integer number (106744120).

Almost surely, 2^213488239 is an apocalyptic number.

213488239 is a deficient number, since it is larger than the sum of its proper divisors (1).

213488239 is an equidigital number, since it uses as much as digits as its factorization.

213488239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 40.

The square root of 213488239 is about 14611.2367375250. The cubic root of 213488239 is about 597.6652218398.

The spelling of 213488239 in words is "two hundred thirteen million, four hundred eighty-eight thousand, two hundred thirty-nine".