813273 has 8 divisors (see below), whose sum is σ = 1091328. Its totient is φ = 538704.

The previous prime is 813269. The next prime is 813277. The reversal of 813273 is 372318.

813273 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (813269) and next prime (813277).

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

It is not a de Polignac number, because 813273 - 2² = 813269 is a prime.

It is a super-2 number, since 2×813273² = 1322825945058, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265 + ... + 1302.

It is an arithmetic number, because the mean of its divisors is an integer number (136416).

2⁸¹³²⁷³ is an apocalyptic number.

It is an amenable number.

813273 is a deficient number, since it is larger than the sum of its proper divisors (278055).

813273 is a wasteful number, since it uses less digits than its factorization.

813273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1743.

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

The square root of 813273 is about 901.8165001817. The cubic root of 813273 is about 93.3423616550.

The spelling of 813273 in words is "eight hundred thirteen thousand, two hundred seventy-three".