284831 has 2 divisors, whose sum is σ = 284832. Its totient is φ = 284830.

The previous prime is 284819. The next prime is 284833. The reversal of 284831 is 138482.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 284831 - 2¹⁰ = 283807 is a prime.

It is a super-2 number, since 2×284831² = 162257397122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 284833, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 12 and base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 284831.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 284831.

It is not a weakly prime, because it can be changed into another prime (284833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142415 + 142416.

It is an arithmetic number, because the mean of its divisors is an integer number (142416).

2²⁸⁴⁸³¹ is an apocalyptic number.

284831 is a deficient number, since it is larger than the sum of its proper divisors (1).

284831 is an equidigital number, since it uses as much as digits as its factorization.

284831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1536, while the sum is 26.

The square root of 284831 is about 533.6956061277. The cubic root of 284831 is about 65.7954333296.

It can be divided in two parts, 2848 and 31, that multiplied together give a palindrome (88288).

The spelling of 284831 in words is "two hundred eighty-four thousand, eight hundred thirty-one".