1323871 has 2 divisors, whose sum is σ = 1323872.
Its totient is φ = 1323870.
The previous prime is 1323869. The next prime is 1323877. The reversal of 1323871 is 1783231.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 1323871 - 21 = 1323869 is a prime.
Together with 1323869, it forms a pair of twin primes.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (1323877) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661935 + 661936.
It is an arithmetic number, because the mean of its divisors is an integer number (661936).
21323871 is an apocalyptic number.
1323871 is a deficient number, since it is larger than the sum of its proper divisors (1).
1323871 is an equidigital number, since it uses as much as digits as its factorization.
1323871 is an evil number, because the sum of its binary digits is even.
The product of its digits is 1008, while the sum is 25.
The square root of 1323871 is about 1150.5959325497.
The cubic root of 1323871 is about 109.8032571365.
The spelling of 1323871 in words is "one million, three hundred twenty-three thousand, eight hundred seventy-one".