284131 has 2 divisors, whose sum is σ = 284132. Its totient is φ = 284130.

The previous prime is 284129. The next prime is 284149. The reversal of 284131 is 131482.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 284131 - 2¹ = 284129 is a prime.

It is a super-2 number, since 2×284131² = 161460850322, which contains 22 as substring.

Together with 284129, it forms a pair of twin primes.

284131 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 284099 and 284108.

It is not a weakly prime, because it can be changed into another prime (284111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142065 + 142066.

It is an arithmetic number, because the mean of its divisors is an integer number (142066).

2²⁸⁴¹³¹ is an apocalyptic number.

284131 is a deficient number, since it is larger than the sum of its proper divisors (1).

284131 is an equidigital number, since it uses as much as digits as its factorization.

284131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192, while the sum is 19.

The square root of 284131 is about 533.0393981687. The cubic root of 284131 is about 65.7414895470.

The spelling of 284131 in words is "two hundred eighty-four thousand, one hundred thirty-one".