813043 has 8 divisors (see below), whose sum is σ = 1013760. Its totient is φ = 633480.

The previous prime is 813041. The next prime is 813049. The reversal of 813043 is 340318.

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

It is a cyclic number.

It is not a de Polignac number, because 813043 - 2¹ = 813041 is a prime.

It is a super-2 number, since 2×813043² = 1322077839698, which contains 22 as substring.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 813043.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813041) 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, 5203 + ... + 5356.

It is an arithmetic number, because the mean of its divisors is an integer number (126720).

2⁸¹³⁰⁴³ is an apocalyptic number.

813043 is a deficient number, since it is larger than the sum of its proper divisors (200717).

813043 is a wasteful number, since it uses less digits than its factorization.

813043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10577.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 813043 is about 901.6889707654. The cubic root of 813043 is about 93.3335615074. Note that the first 3 decimals are identical.

The spelling of 813043 in words is "eight hundred thirteen thousand, forty-three".