813005323 has 4 divisors (see below), whose sum is σ = 875544208. Its totient is φ = 750466440.

The previous prime is 813005321. The next prime is 813005327. The reversal of 813005323 is 323500318.

813005323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 323500318 = 2 ⋅161750159.

It is a cyclic number.

It is not a de Polignac number, because 813005323 - 2¹ = 813005321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (813005321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31269423 + ... + 31269448.

It is an arithmetic number, because the mean of its divisors is an integer number (218886052).

Almost surely, 2^813005323 is an apocalyptic number.

813005323 is a deficient number, since it is larger than the sum of its proper divisors (62538885).

813005323 is a wasteful number, since it uses less digits than its factorization.

813005323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62538884.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 813005323 is about 28513.2482014940. The cubic root of 813005323 is about 933.3211977022.

The spelling of 813005323 in words is "eight hundred thirteen million, five thousand, three hundred twenty-three".