287683223 has 4 divisors (see below), whose sum is σ = 290476368. Its totient is φ = 284890080.

The previous prime is 287683217. The next prime is 287683243. The reversal of 287683223 is 322386782.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322386782 = 2 ⋅161193391.

It is a cyclic number.

It is not a de Polignac number, because 287683223 - 2⁶ = 287683159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287683243) 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, 1396418 + ... + 1396623.

It is an arithmetic number, because the mean of its divisors is an integer number (72619092).

Almost surely, 2^287683223 is an apocalyptic number.

287683223 is a deficient number, since it is larger than the sum of its proper divisors (2793145).

287683223 is a wasteful number, since it uses less digits than its factorization.

287683223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2793144.

The product of its digits is 193536, while the sum is 41.

The square root of 287683223 is about 16961.2270487721. The cubic root of 287683223 is about 660.1432372005.

The spelling of 287683223 in words is "two hundred eighty-seven million, six hundred eighty-three thousand, two hundred twenty-three".