285659131 has 2 divisors, whose sum is σ = 285659132. Its totient is φ = 285659130.

The previous prime is 285659093. The next prime is 285659159. The reversal of 285659131 is 131956582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 285659131 - 2⁹ = 285658619 is a prime.

It is a super-2 number, since 2×285659131² = 163202278247350322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (285659431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142829565 + 142829566.

It is an arithmetic number, because the mean of its divisors is an integer number (142829566).

Almost surely, 2^285659131 is an apocalyptic number.

285659131 is a deficient number, since it is larger than the sum of its proper divisors (1).

285659131 is an equidigital number, since it uses as much as digits as its factorization.

285659131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 40.

The square root of 285659131 is about 16901.4535173754. The cubic root of 285659131 is about 658.5913720649.

The spelling of 285659131 in words is "two hundred eighty-five million, six hundred fifty-nine thousand, one hundred thirty-one".