82271231 has 8 divisors (see below), whose sum is σ = 97266720. Its totient is φ = 68086368.

The previous prime is 82271201. The next prime is 82271237. The reversal of 82271231 is 13217228.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82271231 - 2¹⁰ = 82270207 is a prime.

It is a super-2 number, since 2×82271231² = 13537110900510722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82271231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82271237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202436 + ... + 202841.

It is an arithmetic number, because the mean of its divisors is an integer number (12158340).

Almost surely, 2^82271231 is an apocalyptic number.

82271231 is a deficient number, since it is larger than the sum of its proper divisors (14995489).

82271231 is a wasteful number, since it uses less digits than its factorization.

82271231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405313.

The product of its digits is 1344, while the sum is 26.

The square root of 82271231 is about 9070.3490010032. The cubic root of 82271231 is about 434.9266287491.

Adding to 82271231 its reverse (13217228), we get a palindrome (95488459).

The spelling of 82271231 in words is "eighty-two million, two hundred seventy-one thousand, two hundred thirty-one".