865714231 has 2 divisors, whose sum is σ = 865714232. Its totient is φ = 865714230.

The previous prime is 865714229. The next prime is 865714237. The reversal of 865714231 is 132417568.

865714231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 865714231 - 2¹ = 865714229 is a prime.

It is a super-2 number, since 2×865714231² = 1498922259511842722, which contains 22 as substring.

Together with 865714229, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (865714237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432857115 + 432857116.

It is an arithmetic number, because the mean of its divisors is an integer number (432857116).

Almost surely, 2^865714231 is an apocalyptic number.

865714231 is a deficient number, since it is larger than the sum of its proper divisors (1).

865714231 is an equidigital number, since it uses as much as digits as its factorization.

865714231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 37.

The square root of 865714231 is about 29423.0221255397. The cubic root of 865714231 is about 953.0701159990.

The spelling of 865714231 in words is "eight hundred sixty-five million, seven hundred fourteen thousand, two hundred thirty-one".