281308 has 6 divisors (see below), whose sum is σ = 492296. Its totient is φ = 140652.

The previous prime is 281297. The next prime is 281317. The reversal of 281308 is 803182.

It is a congruent number.

It is an unprimeable number.

281308 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35160 + ... + 35167.

2²⁸¹³⁰⁸ is an apocalyptic number.

It is an amenable number.

281308 is a deficient number, since it is larger than the sum of its proper divisors (210988).

281308 is a wasteful number, since it uses less digits than its factorization.

281308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70331 (or 70329 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 281308 is about 530.3847659954. The cubic root of 281308 is about 65.5230383383.

The spelling of 281308 in words is "two hundred eighty-one thousand, three hundred eight".