1280333 has 2 divisors, whose sum is σ = 1280334. Its totient is φ = 1280332.

The previous prime is 1280317. The next prime is 1280371. The reversal of 1280333 is 3330821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 743044 + 537289 = 862^2 + 733^2 .

It is a cyclic number.

It is not a de Polignac number, because 1280333 - 2⁴ = 1280317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1280633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 640166 + 640167.

It is an arithmetic number, because the mean of its divisors is an integer number (640167).

2^1280333 is an apocalyptic number.

It is an amenable number.

1280333 is a deficient number, since it is larger than the sum of its proper divisors (1).

1280333 is an equidigital number, since it uses as much as digits as its factorization.

1280333 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1280333 is about 1131.5180069270. The cubic root of 1280333 is about 108.5861194835.

The spelling of 1280333 in words is "one million, two hundred eighty thousand, three hundred thirty-three".