203242987 has 2 divisors, whose sum is σ = 203242988. Its totient is φ = 203242986.

The previous prime is 203242979. The next prime is 203242997. The reversal of 203242987 is 789242302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 203242987 - 2³ = 203242979 is a prime.

It is not a weakly prime, because it can be changed into another prime (203242997) 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, 101621493 + 101621494.

It is an arithmetic number, because the mean of its divisors is an integer number (101621494).

Almost surely, 2^203242987 is an apocalyptic number.

203242987 is a deficient number, since it is larger than the sum of its proper divisors (1).

203242987 is an equidigital number, since it uses as much as digits as its factorization.

203242987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 203242987 is about 14256.3314706133. The cubic root of 203242987 is about 587.9474660749.

The spelling of 203242987 in words is "two hundred three million, two hundred forty-two thousand, nine hundred eighty-seven".