82227231 has 60 divisors (see below), whose sum is σ = 136502520. Its totient is φ = 49183200.

The previous prime is 82227217. The next prime is 82227239. The reversal of 82227231 is 13272228.

It is a happy number.

It is not a de Polignac number, because 82227231 - 2⁵ = 82227199 is a prime.

It is a super-2 number, since 2×82227231² = 13522635035854722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 82227195 and 82227204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82227239) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 814081 + ... + 814181.

It is an arithmetic number, because the mean of its divisors is an integer number (2275042).

Almost surely, 2^82227231 is an apocalyptic number.

82227231 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

82227231 is a deficient number, since it is larger than the sum of its proper divisors (54275289).

82227231 is a wasteful number, since it uses less digits than its factorization.

82227231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178 (or 146 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 82227231 is about 9067.9231911171. The cubic root of 82227231 is about 434.8490796310.

Adding to 82227231 its reverse (13272228), we get a palindrome (95499459).

The spelling of 82227231 in words is "eighty-two million, two hundred twenty-seven thousand, two hundred thirty-one".