823044056331 has 32 divisors (see below), whose sum is σ = 1256617359360. Its totient is φ = 469391094144.

The previous prime is 823044056327. The next prime is 823044056363. The reversal of 823044056331 is 133650440328.

It is not a de Polignac number, because 823044056331 - 2² = 823044056327 is a prime.

It is a super-2 number, since 2×823044056331² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 823044056331.

It is not an unprimeable number, because it can be changed into a prime (823044056371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25680825 + ... + 25712853.

It is an arithmetic number, because the mean of its divisors is an integer number (39269292480).

Almost surely, 2^823044056331 is an apocalyptic number.

823044056331 is a deficient number, since it is larger than the sum of its proper divisors (433573303029).

823044056331 is a wasteful number, since it uses less digits than its factorization.

823044056331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34395.

The product of its (nonzero) digits is 207360, while the sum is 39.

Adding to 823044056331 its reverse (133650440328), we get a palindrome (956694496659).

The spelling of 823044056331 in words is "eight hundred twenty-three billion, forty-four million, fifty-six thousand, three hundred thirty-one".