1280303 has 8 divisors (see below), whose sum is σ = 1319472. Its totient is φ = 1241856.

The previous prime is 1280297. The next prime is 1280309. The reversal of 1280303 is 3030821.

It is an interprime number because it is at equal distance from previous prime (1280297) and next prime (1280309).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1280303 - 2¹⁶ = 1214767 is a prime.

It is a Duffinian number.

1280303 is a modest number, since divided by 303 gives 128 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1280309) 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 in 7 ways as a sum of consecutive naturals, for example, 6401 + ... + 6597.

It is an arithmetic number, because the mean of its divisors is an integer number (164934).

2^1280303 is an apocalyptic number.

1280303 is a deficient number, since it is larger than the sum of its proper divisors (39169).

1280303 is an equidigital number, since it uses as much as digits as its factorization.

1280303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1280303 is about 1131.5047503214. The cubic root of 1280303 is about 108.5852713685.

The spelling of 1280303 in words is "one million, two hundred eighty thousand, three hundred three".