823133 has 4 divisors (see below), whose sum is σ = 825468. Its totient is φ = 820800.

The previous prime is 823129. The next prime is 823153. The reversal of 823133 is 331328.

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

It can be written as a sum of positive squares in 2 ways, for example, as 80089 + 743044 = 283^2 + 862^2 .

It is a cyclic number.

It is not a de Polignac number, because 823133 - 2² = 823129 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (823153) 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, 518 + ... + 1383.

It is an arithmetic number, because the mean of its divisors is an integer number (206367).

2⁸²³¹³³ is an apocalyptic number.

It is an amenable number.

823133 is a deficient number, since it is larger than the sum of its proper divisors (2335).

823133 is a wasteful number, since it uses less digits than its factorization.

823133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2334.

The product of its digits is 432, while the sum is 20.

The square root of 823133 is about 907.2667744385. The cubic root of 823133 is about 93.7180703117.

The spelling of 823133 in words is "eight hundred twenty-three thousand, one hundred thirty-three".