1097823 has 4 divisors (see below), whose sum is σ = 1463768. Its totient is φ = 731880.

The previous prime is 1097819. The next prime is 1097849. The reversal of 1097823 is 3287901.

It is a happy number.

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

It is not a de Polignac number, because 1097823 - 2² = 1097819 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1097893) 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, 182968 + ... + 182973.

It is an arithmetic number, because the mean of its divisors is an integer number (365942).

2^1097823 is an apocalyptic number.

1097823 is a deficient number, since it is larger than the sum of its proper divisors (365945).

1097823 is an equidigital number, since it uses as much as digits as its factorization.

1097823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365944.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 1097823 is about 1047.7704901361. The cubic root of 1097823 is about 103.1598673649.

The spelling of 1097823 in words is "one million, ninety-seven thousand, eight hundred twenty-three".