823722043 has 2 divisors, whose sum is σ = 823722044. Its totient is φ = 823722042.

The previous prime is 823722041. The next prime is 823722077. The reversal of 823722043 is 340227328.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 823722043 - 2¹ = 823722041 is a prime.

Together with 823722041, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 823721996 and 823722014.

It is not a weakly prime, because it can be changed into another prime (823722041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411861021 + 411861022.

It is an arithmetic number, because the mean of its divisors is an integer number (411861022).

Almost surely, 2^823722043 is an apocalyptic number.

823722043 is a deficient number, since it is larger than the sum of its proper divisors (1).

823722043 is an equidigital number, since it uses as much as digits as its factorization.

823722043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 823722043 is about 28700.5582349891. The cubic root of 823722043 is about 937.4042020750.

The spelling of 823722043 in words is "eight hundred twenty-three million, seven hundred twenty-two thousand, forty-three".