1257323 has 2 divisors, whose sum is σ = 1257324. Its totient is φ = 1257322.

The previous prime is 1257317. The next prime is 1257331. The reversal of 1257323 is 3237521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1257323 - 2⁴ = 1257307 is a prime.

It is a super-2 number, since 2×1257323² = 3161722252658, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1257313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 628661 + 628662.

It is an arithmetic number, because the mean of its divisors is an integer number (628662).

2^1257323 is an apocalyptic number.

1257323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1257323 is an equidigital number, since it uses as much as digits as its factorization.

1257323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1260, while the sum is 23.

The square root of 1257323 is about 1121.3041514237. The cubic root of 1257323 is about 107.9316840474.

The spelling of 1257323 in words is "one million, two hundred fifty-seven thousand, three hundred twenty-three".