1303440323 has 2 divisors, whose sum is σ = 1303440324. Its totient is φ = 1303440322.

The previous prime is 1303440317. The next prime is 1303440343. The reversal of 1303440323 is 3230443031.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1303440323 - 2²² = 1299246019 is a prime.

It is not a weakly prime, because it can be changed into another prime (1303440343) 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, 651720161 + 651720162.

It is an arithmetic number, because the mean of its divisors is an integer number (651720162).

Almost surely, 2^1303440323 is an apocalyptic number.

1303440323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1303440323 is an equidigital number, since it uses as much as digits as its factorization.

1303440323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 23.

The square root of 1303440323 is about 36103.1899283152. The cubic root of 1303440323 is about 1092.3547899101.

Adding to 1303440323 its reverse (3230443031), we get a palindrome (4533883354).

The spelling of 1303440323 in words is "one billion, three hundred three million, four hundred forty thousand, three hundred twenty-three".