1323431203 has 2 divisors, whose sum is σ = 1323431204. Its totient is φ = 1323431202.

The previous prime is 1323431189. The next prime is 1323431227. The reversal of 1323431203 is 3021343231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1323431203 - 2⁵ = 1323431171 is a prime.

It is not a weakly prime, because it can be changed into another prime (1323431273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661715601 + 661715602.

It is an arithmetic number, because the mean of its divisors is an integer number (661715602).

Almost surely, 2^1323431203 is an apocalyptic number.

1323431203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323431203 is an equidigital number, since it uses as much as digits as its factorization.

1323431203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 1323431203 is about 36378.9939800429. The cubic root of 1323431203 is about 1097.9109671417.

Adding to 1323431203 its reverse (3021343231), we get a palindrome (4344774434).

The spelling of 1323431203 in words is "one billion, three hundred twenty-three million, four hundred thirty-one thousand, two hundred three".