323081987 has 2 divisors, whose sum is σ = 323081988. Its totient is φ = 323081986.

The previous prime is 323081981. The next prime is 323082049. The reversal of 323081987 is 789180323.

It is a weak prime.

It is an emirp because it is prime and its reverse (789180323) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 323081987 - 2²⁸ = 54646531 is a prime.

It is not a weakly prime, because it can be changed into another prime (323081981) 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, 161540993 + 161540994.

It is an arithmetic number, because the mean of its divisors is an integer number (161540994).

Almost surely, 2^323081987 is an apocalyptic number.

323081987 is a deficient number, since it is larger than the sum of its proper divisors (1).

323081987 is an equidigital number, since it uses as much as digits as its factorization.

323081987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 323081987 is about 17974.4815502423. The cubic root of 323081987 is about 686.1792513243.

The spelling of 323081987 in words is "three hundred twenty-three million, eighty-one thousand, nine hundred eighty-seven".