1303240503 has 4 divisors (see below), whose sum is σ = 1737654008. Its totient is φ = 868827000.

The previous prime is 1303240501. The next prime is 1303240507. The reversal of 1303240503 is 3050423031.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1303240503 - 2¹ = 1303240501 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1303240503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1303240501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217206748 + ... + 217206753.

It is an arithmetic number, because the mean of its divisors is an integer number (434413502).

Almost surely, 2^1303240503 is an apocalyptic number.

1303240503 is a deficient number, since it is larger than the sum of its proper divisors (434413505).

1303240503 is an equidigital number, since it uses as much as digits as its factorization.

1303240503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434413504.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 1303240503 is about 36100.4224767523. The cubic root of 1303240503 is about 1092.2989670017.

Adding to 1303240503 its reverse (3050423031), we get a palindrome (4353663534).

It can be divided in two parts, 13032 and 40503, that added together give a palindrome (53535).

The spelling of 1303240503 in words is "one billion, three hundred three million, two hundred forty thousand, five hundred three".