1011823 has 8 divisors (see below), whose sum is σ = 1092528. Its totient is φ = 933504.

The previous prime is 1011817. The next prime is 1011827. The reversal of 1011823 is 3281101.

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

It is not a de Polignac number, because 1011823 - 2¹³ = 1003631 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011797 and 1011806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340 + ... + 1462.

It is an arithmetic number, because the mean of its divisors is an integer number (136566).

2^1011823 is an apocalyptic number.

1011823 is a deficient number, since it is larger than the sum of its proper divisors (80705).

1011823 is a wasteful number, since it uses less digits than its factorization.

1011823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1193.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1011823 is about 1005.8941296180. The cubic root of 1011823 is about 100.3925569738.

Adding to 1011823 its reverse (3281101), we get a palindrome (4292924).

The spelling of 1011823 in words is "one million, eleven thousand, eight hundred twenty-three".