1228303 has 2 divisors, whose sum is σ = 1228304. Its totient is φ = 1228302.

The previous prime is 1228291. The next prime is 1228309. The reversal of 1228303 is 3038221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1228303 is a prime.

1228303 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1228309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614151 + 614152.

It is an arithmetic number, because the mean of its divisors is an integer number (614152).

2^1228303 is an apocalyptic number.

1228303 is a deficient number, since it is larger than the sum of its proper divisors (1).

1228303 is an equidigital number, since it uses as much as digits as its factorization.

1228303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1228303 is about 1108.2883198879. The cubic root of 1228303 is about 107.0948296068.

The spelling of 1228303 in words is "one million, two hundred twenty-eight thousand, three hundred three".