87086231 has 2 divisors, whose sum is σ = 87086232. Its totient is φ = 87086230.

The previous prime is 87086221. The next prime is 87086267. The reversal of 87086231 is 13268078.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87086231 is a prime.

It is a super-2 number, since 2×87086231² = 15168023259570722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 87086191 and 87086200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87086221) 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 as a sum of consecutive naturals, namely, 43543115 + 43543116.

It is an arithmetic number, because the mean of its divisors is an integer number (43543116).

Almost surely, 2^87086231 is an apocalyptic number.

87086231 is a deficient number, since it is larger than the sum of its proper divisors (1).

87086231 is an equidigital number, since it uses as much as digits as its factorization.

87086231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 87086231 is about 9332.0003750536. Note that the first 3 decimals coincide. The cubic root of 87086231 is about 443.2511098698.

The spelling of 87086231 in words is "eighty-seven million, eighty-six thousand, two hundred thirty-one".