82112711 has 4 divisors (see below), whose sum is σ = 82240272. Its totient is φ = 81985152.

The previous prime is 82112689. The next prime is 82112747. The reversal of 82112711 is 11721128.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82112711 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 (82112761) 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, 62810 + ... + 64103.

It is an arithmetic number, because the mean of its divisors is an integer number (20560068).

Almost surely, 2^82112711 is an apocalyptic number.

82112711 is a deficient number, since it is larger than the sum of its proper divisors (127561).

82112711 is a wasteful number, since it uses less digits than its factorization.

82112711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127560.

The product of its digits is 224, while the sum is 23.

The square root of 82112711 is about 9061.6064249116. The cubic root of 82112711 is about 434.6471106375.

Adding to 82112711 its reverse (11721128), we get a palindrome (93833839).

The spelling of 82112711 in words is "eighty-two million, one hundred twelve thousand, seven hundred eleven".