1305103423 has 16 divisors (see below), whose sum is σ = 1431561600. Its totient is φ = 1182434400.

The previous prime is 1305103411. The next prime is 1305103427. The reversal of 1305103423 is 3243015031.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1305103423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1305103394 and 1305103403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305103427) 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 in 15 ways as a sum of consecutive naturals, for example, 805308 + ... + 806926.

It is an arithmetic number, because the mean of its divisors is an integer number (89472600).

Almost surely, 2^1305103423 is an apocalyptic number.

1305103423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1305103423 is a deficient number, since it is larger than the sum of its proper divisors (126458177).

1305103423 is a wasteful number, since it uses less digits than its factorization.

1305103423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2742.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 1305103423 is about 36126.2151767937. The cubic root of 1305103423 is about 1092.8191822588.

Adding to 1305103423 its reverse (3243015031), we get a palindrome (4548118454).

The spelling of 1305103423 in words is "one billion, three hundred five million, one hundred three thousand, four hundred twenty-three".