283681321 has 8 divisors (see below), whose sum is σ = 353680704. Its totient is φ = 221050320.

The previous prime is 283681319. The next prime is 283681327. The reversal of 283681321 is 123186382.

It is a happy number.

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 283681321 - 2¹ = 283681319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (283681327) 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, 1842010 + ... + 1842163.

It is an arithmetic number, because the mean of its divisors is an integer number (44210088).

Almost surely, 2^283681321 is an apocalyptic number.

It is an amenable number.

283681321 is a deficient number, since it is larger than the sum of its proper divisors (69999383).

283681321 is a wasteful number, since it uses less digits than its factorization.

283681321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3684191.

The product of its digits is 13824, while the sum is 34.

The square root of 283681321 is about 16842.8418326600. The cubic root of 283681321 is about 657.0678938321.

The spelling of 283681321 in words is "two hundred eighty-three million, six hundred eighty-one thousand, three hundred twenty-one".