203228497 has 2 divisors, whose sum is σ = 203228498. Its totient is φ = 203228496.

The previous prime is 203228471. The next prime is 203228507. The reversal of 203228497 is 794822302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144384256 + 58844241 = 12016^2 + 7671^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203228497 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (203228197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101614248 + 101614249.

It is an arithmetic number, because the mean of its divisors is an integer number (101614249).

Almost surely, 2^203228497 is an apocalyptic number.

It is an amenable number.

203228497 is a deficient number, since it is larger than the sum of its proper divisors (1).

203228497 is an equidigital number, since it uses as much as digits as its factorization.

203228497 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 203228497 is about 14255.8232663007. The cubic root of 203228497 is about 587.9334933726.

The spelling of 203228497 in words is "two hundred three million, two hundred twenty-eight thousand, four hundred ninety-seven".