82319311 has 4 divisors (see below), whose sum is σ = 82864624. Its totient is φ = 81774000.

The previous prime is 82319261. The next prime is 82319333. The reversal of 82319311 is 11391328.

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 82319311 - 2⁹ = 82318799 is a prime.

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 82319311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82319411) 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, 272430 + ... + 272731.

It is an arithmetic number, because the mean of its divisors is an integer number (20716156).

Almost surely, 2^82319311 is an apocalyptic number.

82319311 is a deficient number, since it is larger than the sum of its proper divisors (545313).

82319311 is a wasteful number, since it uses less digits than its factorization.

82319311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545312.

The product of its digits is 1296, while the sum is 28.

The square root of 82319311 is about 9072.9990080458. Note that the first 3 decimals coincide. The cubic root of 82319311 is about 435.0113371775.

The spelling of 82319311 in words is "eighty-two million, three hundred nineteen thousand, three hundred eleven".