813113 has 4 divisors (see below), whose sum is σ = 929280. Its totient is φ = 696948.

The previous prime is 813107. The next prime is 813121. The reversal of 813113 is 311318.

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 not a de Polignac number, because 813113 - 2⁴ = 813097 is a prime.

It is a super-2 number, since 2×813113² = 1322305501538, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 813091 and 813100.

It is not an unprimeable number, because it can be changed into a prime (813133) 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, 58073 + ... + 58086.

It is an arithmetic number, because the mean of its divisors is an integer number (232320).

2⁸¹³¹¹³ is an apocalyptic number.

It is an amenable number.

813113 is a deficient number, since it is larger than the sum of its proper divisors (116167).

813113 is a wasteful number, since it uses less digits than its factorization.

813113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116166.

The product of its digits is 72, while the sum is 17.

The square root of 813113 is about 901.7277859753. The cubic root of 813113 is about 93.3362399888.

The spelling of 813113 in words is "eight hundred thirteen thousand, one hundred thirteen".