86910231 has 4 divisors (see below), whose sum is σ = 115880312. Its totient is φ = 57940152.

The previous prime is 86910217. The next prime is 86910253. The reversal of 86910231 is 13201968.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 86910231 - 2¹⁷ = 86779159 is a prime.

It is a super-2 number, since 2×86910231² = 15106776504946722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86910211) 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 3 ways as a sum of consecutive naturals, for example, 14485036 + ... + 14485041.

It is an arithmetic number, because the mean of its divisors is an integer number (28970078).

Almost surely, 2^86910231 is an apocalyptic number.

86910231 is a deficient number, since it is larger than the sum of its proper divisors (28970081).

86910231 is a wasteful number, since it uses less digits than its factorization.

86910231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28970080.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 86910231 is about 9322.5656876205. The cubic root of 86910231 is about 442.9523071492.

The spelling of 86910231 in words is "eighty-six million, nine hundred ten thousand, two hundred thirty-one".