1323997 has 2 divisors, whose sum is σ = 1323998. Its totient is φ = 1323996.

The previous prime is 1323967. The next prime is 1324007. The reversal of 1323997 is 7993231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 835396 + 488601 = 914^2 + 699^2 .

It is an emirp because it is prime and its reverse (7993231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1323997 - 2⁷ = 1323869 is a prime.

1323997 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1323967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661998 + 661999.

It is an arithmetic number, because the mean of its divisors is an integer number (661999).

2^1323997 is an apocalyptic number.

It is an amenable number.

1323997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323997 is an equidigital number, since it uses as much as digits as its factorization.

1323997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10206, while the sum is 34.

The square root of 1323997 is about 1150.6506854819. The cubic root of 1323997 is about 109.8067405503.

The spelling of 1323997 in words is "one million, three hundred twenty-three thousand, nine hundred ninety-seven".