86228231 has 4 divisors (see below), whose sum is σ = 86251032. Its totient is φ = 86205432.

The previous prime is 86228209. The next prime is 86228239. The reversal of 86228231 is 13282268.

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

It is a cyclic number.

It is not a de Polignac number, because 86228231 - 2¹⁸ = 85966087 is a prime.

It is a super-2 number, since 2×86228231² = 14870615642778722, 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 (86228239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4220 + ... + 13793.

It is an arithmetic number, because the mean of its divisors is an integer number (21562758).

Almost surely, 2^86228231 is an apocalyptic number.

86228231 is a deficient number, since it is larger than the sum of its proper divisors (22801).

86228231 is a wasteful number, since it uses less digits than its factorization.

86228231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22800.

The product of its digits is 9216, while the sum is 32.

The square root of 86228231 is about 9285.9157329797. The cubic root of 86228231 is about 441.7906214010.

The spelling of 86228231 in words is "eighty-six million, two hundred twenty-eight thousand, two hundred thirty-one".