82231111 has 4 divisors (see below), whose sum is σ = 83579224. Its totient is φ = 80883000.

The previous prime is 82231087. The next prime is 82231129. The reversal of 82231111 is 11113228.

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 82231111 - 2²⁵ = 48676679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82231181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 673965 + ... + 674086.

It is an arithmetic number, because the mean of its divisors is an integer number (20894806).

Almost surely, 2^82231111 is an apocalyptic number.

82231111 is a deficient number, since it is larger than the sum of its proper divisors (1348113).

82231111 is a wasteful number, since it uses less digits than its factorization.

82231111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1348112.

The product of its digits is 96, while the sum is 19.

The square root of 82231111 is about 9068.1371295322. The cubic root of 82231111 is about 434.8559191652.

Adding to 82231111 its reverse (11113228), we get a palindrome (93344339).

The spelling of 82231111 in words is "eighty-two million, two hundred thirty-one thousand, one hundred eleven".