82431223 has 4 divisors (see below), whose sum is σ = 94207120. Its totient is φ = 70655328.

The previous prime is 82431221. The next prime is 82431229. The reversal of 82431223 is 32213428.

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 82431223 - 2¹ = 82431221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82431221) 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, 5887938 + ... + 5887951.

It is an arithmetic number, because the mean of its divisors is an integer number (23551780).

Almost surely, 2^82431223 is an apocalyptic number.

82431223 is a deficient number, since it is larger than the sum of its proper divisors (11775897).

82431223 is a wasteful number, since it uses less digits than its factorization.

82431223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11775896.

The product of its digits is 2304, while the sum is 25.

The square root of 82431223 is about 9079.1642236497. The cubic root of 82431223 is about 435.2083786070.

The spelling of 82431223 in words is "eighty-two million, four hundred thirty-one thousand, two hundred twenty-three".