286140231 has 24 divisors (see below), whose sum is σ = 446322240. Its totient is φ = 175605696.

The previous prime is 286140229. The next prime is 286140233. The reversal of 286140231 is 132041682.

286140231 is a `hidden beast` number, since 28 + 614 + 0 + 23 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (286140229) and next prime (286140233).

It is not a de Polignac number, because 286140231 - 2¹ = 286140229 is a prime.

It is a super-2 number, since 2×286140231² = 163752463593466722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 286140195 and 286140204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (286140233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42370 + ... + 48656.

It is an arithmetic number, because the mean of its divisors is an integer number (18596760).

Almost surely, 2^286140231 is an apocalyptic number.

286140231 is a deficient number, since it is larger than the sum of its proper divisors (160182009).

286140231 is a wasteful number, since it uses less digits than its factorization.

286140231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6695 (or 6692 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 286140231 is about 16915.6800336256. The cubic root of 286140231 is about 658.9608924302.

The spelling of 286140231 in words is "two hundred eighty-six million, one hundred forty thousand, two hundred thirty-one".