228086231 has 4 divisors (see below), whose sum is σ = 229751232. Its totient is φ = 226421232.

The previous prime is 228086227. The next prime is 228086249. The reversal of 228086231 is 132680822.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132680822 = 2 ⋅66340411.

It is a cyclic number.

It is not a de Polignac number, because 228086231 - 2² = 228086227 is a prime.

It is a super-2 number, since 2×228086231² = 104046657543570722, 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 (228086281) 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, 832295 + ... + 832568.

It is an arithmetic number, because the mean of its divisors is an integer number (57437808).

Almost surely, 2^228086231 is an apocalyptic number.

228086231 is a deficient number, since it is larger than the sum of its proper divisors (1665001).

228086231 is a wasteful number, since it uses less digits than its factorization.

228086231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1665000.

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

The square root of 228086231 is about 15102.5239943527. The cubic root of 228086231 is about 610.9884815452.

The spelling of 228086231 in words is "two hundred twenty-eight million, eighty-six thousand, two hundred thirty-one".