200131289 has 2 divisors, whose sum is σ = 200131290. Its totient is φ = 200131288.

The previous prime is 200131279. The next prime is 200131387. The reversal of 200131289 is 982131002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114661264 + 85470025 = 10708^2 + 9245^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200131289 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (200131219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100065644 + 100065645.

It is an arithmetic number, because the mean of its divisors is an integer number (100065645).

Almost surely, 2^200131289 is an apocalyptic number.

It is an amenable number.

200131289 is a deficient number, since it is larger than the sum of its proper divisors (1).

200131289 is an equidigital number, since it uses as much as digits as its factorization.

200131289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 200131289 is about 14146.7766293244. The cubic root of 200131289 is about 584.9314834407.

The spelling of 200131289 in words is "two hundred million, one hundred thirty-one thousand, two hundred eighty-nine".