823431841 has 4 divisors (see below), whose sum is σ = 828885184. Its totient is φ = 817978500.

The previous prime is 823431821. The next prime is 823431857. The reversal of 823431841 is 148134328.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 823431841 - 2¹¹ = 823429793 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 823431797 and 823431806.

It is not an unprimeable number, because it can be changed into a prime (823431821) 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 in 3 ways as a sum of consecutive naturals, for example, 2726445 + ... + 2726746.

It is an arithmetic number, because the mean of its divisors is an integer number (207221296).

Almost surely, 2^823431841 is an apocalyptic number.

It is an amenable number.

823431841 is a deficient number, since it is larger than the sum of its proper divisors (5453343).

823431841 is a wasteful number, since it uses less digits than its factorization.

823431841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5453342.

The product of its digits is 18432, while the sum is 34.

The square root of 823431841 is about 28695.5021039884. The cubic root of 823431841 is about 937.2941048525.

The spelling of 823431841 in words is "eight hundred twenty-three million, four hundred thirty-one thousand, eight hundred forty-one".