858601820231 has 2 divisors, whose sum is σ = 858601820232. Its totient is φ = 858601820230.

The previous prime is 858601820143. The next prime is 858601820267. The reversal of 858601820231 is 132028106858.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 858601820231 - 2¹⁴ = 858601803847 is a prime.

It is a super-2 number, since 2×858601820231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (858601820281) 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, 429300910115 + 429300910116.

It is an arithmetic number, because the mean of its divisors is an integer number (429300910116).

Almost surely, 2^858601820231 is an apocalyptic number.

858601820231 is a deficient number, since it is larger than the sum of its proper divisors (1).

858601820231 is an equidigital number, since it uses as much as digits as its factorization.

858601820231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 184320, while the sum is 44.

It can be divided in two parts, 85860 and 1820231, that added together give a palindrome (1906091).

The spelling of 858601820231 in words is "eight hundred fifty-eight billion, six hundred one million, eight hundred twenty thousand, two hundred thirty-one".