823134 has 32 divisors (see below), whose sum is σ = 1812384. Its totient is φ = 247680.

The previous prime is 823129. The next prime is 823153. The reversal of 823134 is 431328.

It is a happy number.

It is a nialpdrome in base 7.

It is a zygodrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 823134.

It is a congruent number.

It is an unprimeable number.

823134 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4672 + ... + 4844.

It is an arithmetic number, because the mean of its divisors is an integer number (56637).

2⁸²³¹³⁴ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 823134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (906192).

823134 is an abundant number, since it is smaller than the sum of its proper divisors (989250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

823134 is a wasteful number, since it uses less digits than its factorization.

823134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252.

The product of its digits is 576, while the sum is 21.

The square root of 823134 is about 907.2673255441. The cubic root of 823134 is about 93.7181082635.

The spelling of 823134 in words is "eight hundred twenty-three thousand, one hundred thirty-four".