1323457 has 2 divisors, whose sum is σ = 1323458. Its totient is φ = 1323456.

The previous prime is 1323437. The next prime is 1323461. The reversal of 1323457 is 7543231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 952576 + 370881 = 976^2 + 609^2 .

It is an emirp because it is prime and its reverse (7543231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1323457 - 2¹¹ = 1321409 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1323437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661728 + 661729.

It is an arithmetic number, because the mean of its divisors is an integer number (661729).

2^1323457 is an apocalyptic number.

It is an amenable number.

1323457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323457 is an equidigital number, since it uses as much as digits as its factorization.

1323457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 25.

The square root of 1323457 is about 1150.4160117105. The cubic root of 1323457 is about 109.7918100777.

Adding to 1323457 its reverse (7543231), we get a palindrome (8866688).

The spelling of 1323457 in words is "one million, three hundred twenty-three thousand, four hundred fifty-seven".