203242997 has 2 divisors, whose sum is σ = 203242998. Its totient is φ = 203242996.

The previous prime is 203242987. The next prime is 203243011. The reversal of 203242997 is 799242302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 174609796 + 28633201 = 13214^2 + 5351^2 .

It is a cyclic number.

It is not a de Polignac number, because 203242997 - 2¹² = 203238901 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 203242997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203242987) 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, 101621498 + 101621499.

It is an arithmetic number, because the mean of its divisors is an integer number (101621499).

Almost surely, 2^203242997 is an apocalyptic number.

It is an amenable number.

203242997 is a deficient number, since it is larger than the sum of its proper divisors (1).

203242997 is an equidigital number, since it uses as much as digits as its factorization.

203242997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 203242997 is about 14256.3318213347. The cubic root of 203242997 is about 587.9474757177.

The spelling of 203242997 in words is "two hundred three million, two hundred forty-two thousand, nine hundred ninety-seven".