2319840823 has 4 divisors (see below), whose sum is σ = 2325077928. Its totient is φ = 2314603720.

The previous prime is 2319840781. The next prime is 2319840827. The reversal of 2319840823 is 3280489132.

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 2319840823 - 2¹⁷ = 2319709751 is a prime.

It is a super-2 number, since 2×2319840823² = 10763322888114634658, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2319840827) 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, 2617888 + ... + 2618773.

It is an arithmetic number, because the mean of its divisors is an integer number (581269482).

Almost surely, 2^2319840823 is an apocalyptic number.

2319840823 is a deficient number, since it is larger than the sum of its proper divisors (5237105).

2319840823 is an equidigital number, since it uses as much as digits as its factorization.

2319840823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5237104.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 2319840823 is about 48164.7259205323. The cubic root of 2319840823 is about 1323.7909127798.

The spelling of 2319840823 in words is "two billion, three hundred nineteen million, eight hundred forty thousand, eight hundred twenty-three".