82818231 has 8 divisors (see below), whose sum is σ = 112072704. Its totient is φ = 54387960.

The previous prime is 82818221. The next prime is 82818233. The reversal of 82818231 is 13281828.

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

It is not a de Polignac number, because 82818231 - 2⁷ = 82818103 is a prime.

It is a super-2 number, since 2×82818231² = 13717718771938722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 82818192 and 82818201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82818233) 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, 205815 + ... + 206216.

It is an arithmetic number, because the mean of its divisors is an integer number (14009088).

Almost surely, 2^82818231 is an apocalyptic number.

82818231 is a deficient number, since it is larger than the sum of its proper divisors (29254473).

82818231 is a wasteful number, since it uses less digits than its factorization.

82818231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412101.

The product of its digits is 6144, while the sum is 33.

The square root of 82818231 is about 9100.4522415098. The cubic root of 82818231 is about 435.8884050029. Note that the first 3 decimals are identical.

The spelling of 82818231 in words is "eighty-two million, eight hundred eighteen thousand, two hundred thirty-one".