1228993303 has 2 divisors, whose sum is σ = 1228993304. Its totient is φ = 1228993302.

The previous prime is 1228993229. The next prime is 1228993387. The reversal of 1228993303 is 3033998221.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (3033998221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1228993303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1228993603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614496651 + 614496652.

It is an arithmetic number, because the mean of its divisors is an integer number (614496652).

Almost surely, 2^1228993303 is an apocalyptic number.

1228993303 is a deficient number, since it is larger than the sum of its proper divisors (1).

1228993303 is an equidigital number, since it uses as much as digits as its factorization.

1228993303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 1228993303 is about 35057.0007701743. Note that the first 3 decimals coincide. The cubic root of 1228993303 is about 1071.1488818557.

The spelling of 1228993303 in words is "one billion, two hundred twenty-eight million, nine hundred ninety-three thousand, three hundred three".