200320987 has 2 divisors, whose sum is σ = 200320988. Its totient is φ = 200320986.

The previous prime is 200320949. The next prime is 200320999. The reversal of 200320987 is 789023002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200320987 is a prime.

It is not a weakly prime, because it can be changed into another prime (200320907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100160493 + 100160494.

It is an arithmetic number, because the mean of its divisors is an integer number (100160494).

Almost surely, 2^200320987 is an apocalyptic number.

200320987 is a deficient number, since it is larger than the sum of its proper divisors (1).

200320987 is an equidigital number, since it uses as much as digits as its factorization.

200320987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 200320987 is about 14153.4796781569. The cubic root of 200320987 is about 585.1162376471.

Adding to 200320987 its reverse (789023002), we get a palindrome (989343989).

The spelling of 200320987 in words is "two hundred million, three hundred twenty thousand, nine hundred eighty-seven".