328239287 has 2 divisors, whose sum is σ = 328239288. Its totient is φ = 328239286.

The previous prime is 328239277. The next prime is 328239293. The reversal of 328239287 is 782932823.

It is a strong prime.

It is an emirp because it is prime and its reverse (782932823) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 328239287 - 2⁴ = 328239271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (328239227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164119643 + 164119644.

It is an arithmetic number, because the mean of its divisors is an integer number (164119644).

Almost surely, 2^328239287 is an apocalyptic number.

328239287 is a deficient number, since it is larger than the sum of its proper divisors (1).

328239287 is an equidigital number, since it uses as much as digits as its factorization.

328239287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 44.

The square root of 328239287 is about 18117.3752789967. The cubic root of 328239287 is about 689.8111133186.

The spelling of 328239287 in words is "three hundred twenty-eight million, two hundred thirty-nine thousand, two hundred eighty-seven".