813011 has 4 divisors (see below), whose sum is σ = 819000. Its totient is φ = 807024.

The previous prime is 812969. The next prime is 813013. The reversal of 813011 is 110318.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-813011 is a prime.

It is a super-2 number, since 2×813011² = 1321973772242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (813013) 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, 2786 + ... + 3063.

It is an arithmetic number, because the mean of its divisors is an integer number (204750).

2⁸¹³⁰¹¹ is an apocalyptic number.

813011 is a deficient number, since it is larger than the sum of its proper divisors (5989).

813011 is a wasteful number, since it uses less digits than its factorization.

813011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5988.

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

The square root of 813011 is about 901.6712261129. The cubic root of 813011 is about 93.3323370075.

Adding to 813011 its reverse (110318), we get a palindrome (923329).

The spelling of 813011 in words is "eight hundred thirteen thousand, eleven".