82164331 has 4 divisors (see below), whose sum is σ = 82182600. Its totient is φ = 82146064.

The previous prime is 82164317. The next prime is 82164343. The reversal of 82164331 is 13346128.

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 82164331 - 2⁹ = 82163819 is a prime.

It is a super-2 number, since 2×82164331² = 13501954577355122, 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 82164331.

It is not an unprimeable number, because it can be changed into a prime (82164031) 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, 2880 + ... + 13138.

It is an arithmetic number, because the mean of its divisors is an integer number (20545650).

Almost surely, 2^82164331 is an apocalyptic number.

82164331 is a deficient number, since it is larger than the sum of its proper divisors (18269).

82164331 is a wasteful number, since it uses less digits than its factorization.

82164331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18268.

The product of its digits is 3456, while the sum is 28.

The square root of 82164331 is about 9064.4542582552. The cubic root of 82164331 is about 434.7381715855.

The spelling of 82164331 in words is "eighty-two million, one hundred sixty-four thousand, three hundred thirty-one".