813000723 has 8 divisors (see below), whose sum is σ = 1084142736. Its totient is φ = 541929600.

The previous prime is 813000719. The next prime is 813000731. The reversal of 813000723 is 327000318.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 813000723 - 2² = 813000719 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 813000693 and 813000702.

It is not an unprimeable number, because it can be changed into a prime (813000743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21343 + ... + 45623.

It is an arithmetic number, because the mean of its divisors is an integer number (135517842).

Almost surely, 2^813000723 is an apocalyptic number.

813000723 is a deficient number, since it is larger than the sum of its proper divisors (271142013).

813000723 is a wasteful number, since it uses less digits than its factorization.

813000723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35445.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 813000723 is about 28513.1675371222. The cubic root of 813000723 is about 933.3194374490.

The spelling of 813000723 in words is "eight hundred thirteen million, seven hundred twenty-three", and thus it is an aban number.