823130 has 32 divisors (see below), whose sum is σ = 1848960. Its totient is φ = 256320.

The previous prime is 823129. The next prime is 823153. The reversal of 823130 is 31328.

It is a Curzon number.

It is a nialpdrome in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 823099 and 823108.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 236 + ... + 1304.

It is an arithmetic number, because the mean of its divisors is an integer number (57780).

2⁸²³¹³⁰ is an apocalyptic number.

823130 is an abundant number, since it is smaller than the sum of its proper divisors (1025830).

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

823130 is a wasteful number, since it uses less digits than its factorization.

823130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1094.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 823130 is about 907.2651211195. The cubic root of 823130 is about 93.7179564562.

Adding to 823130 its reverse (31328), we get a palindrome (854458).

The spelling of 823130 in words is "eight hundred twenty-three thousand, one hundred thirty".