823623013 has 4 divisors (see below), whose sum is σ = 823744800. Its totient is φ = 823501228.

The previous prime is 823622959. The next prime is 823623019. The reversal of 823623013 is 310326328.

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 823623013 - 2¹³ = 823614821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (823623019) 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, 50113 + ... + 64486.

It is an arithmetic number, because the mean of its divisors is an integer number (205936200).

Almost surely, 2^823623013 is an apocalyptic number.

It is an amenable number.

823623013 is a deficient number, since it is larger than the sum of its proper divisors (121787).

823623013 is a wasteful number, since it uses less digits than its factorization.

823623013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121786.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 823623013 is about 28698.8329553660. The cubic root of 823623013 is about 937.3666348481.

The spelling of 823623013 in words is "eight hundred twenty-three million, six hundred twenty-three thousand, thirteen".