811013 has 4 divisors (see below), whose sum is σ = 926880. Its totient is φ = 695148.

The previous prime is 810989. The next prime is 811037. The reversal of 811013 is 310118.

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 an interprime number because it is at equal distance from previous prime (810989) and next prime (811037).

It is a cyclic number.

It is not a de Polignac number, because 811013 - 2⁶ = 810949 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 (810013) 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, 57923 + ... + 57936.

It is an arithmetic number, because the mean of its divisors is an integer number (231720).

2⁸¹¹⁰¹³ is an apocalyptic number.

It is an amenable number.

811013 is a deficient number, since it is larger than the sum of its proper divisors (115867).

811013 is a wasteful number, since it uses less digits than its factorization.

811013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115866.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 811013 is about 900.5626019328. The cubic root of 811013 is about 93.2558185771.

The spelling of 811013 in words is "eight hundred eleven thousand, thirteen".