1323811 has 4 divisors (see below), whose sum is σ = 1381392. Its totient is φ = 1266232.

The previous prime is 1323799. The next prime is 1323851. The reversal of 1323811 is 1183231.

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

It is a cyclic number.

It is not a de Polignac number, because 1323811 - 2⁵ = 1323779 is a prime.

It is a Duffinian number.

1323811 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1323851) 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, 28756 + ... + 28801.

It is an arithmetic number, because the mean of its divisors is an integer number (345348).

2^1323811 is an apocalyptic number.

1323811 is a deficient number, since it is larger than the sum of its proper divisors (57581).

1323811 is an equidigital number, since it uses as much as digits as its factorization.

1323811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57580.

The product of its digits is 144, while the sum is 19.

The square root of 1323811 is about 1150.5698588091. The cubic root of 1323811 is about 109.8015982904.

The spelling of 1323811 in words is "one million, three hundred twenty-three thousand, eight hundred eleven".