280065283 has 4 divisors (see below), whose sum is σ = 280412280. Its totient is φ = 279718288.

The previous prime is 280065257. The next prime is 280065299. The reversal of 280065283 is 382560082.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 382560082 = 2 ⋅191280041.

It is a cyclic number.

It is not a de Polignac number, because 280065283 - 2¹⁷ = 279934211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (280065083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172285 + ... + 173902.

It is an arithmetic number, because the mean of its divisors is an integer number (70103070).

Almost surely, 2^280065283 is an apocalyptic number.

280065283 is a deficient number, since it is larger than the sum of its proper divisors (346997).

280065283 is an equidigital number, since it uses as much as digits as its factorization.

280065283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346996.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 280065283 is about 16735.1511197240. The cubic root of 280065283 is about 654.2641021396.

The spelling of 280065283 in words is "two hundred eighty million, sixty-five thousand, two hundred eighty-three".