1243041303 has 16 divisors (see below), whose sum is σ = 1895075840. Its totient is φ = 709965216.

The previous prime is 1243041271. The next prime is 1243041337. The reversal of 1243041303 is 3031403421.

It is not a de Polignac number, because 1243041303 - 2⁵ = 1243041271 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1243041303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243041353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33801 + ... + 60237.

It is an arithmetic number, because the mean of its divisors is an integer number (118442240).

Almost surely, 2^1243041303 is an apocalyptic number.

1243041303 is a deficient number, since it is larger than the sum of its proper divisors (652034537).

1243041303 is a wasteful number, since it uses less digits than its factorization.

1243041303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28686.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1243041303 is about 35256.7908777869. The cubic root of 1243041303 is about 1075.2146830658.

Adding to 1243041303 its reverse (3031403421), we get a palindrome (4274444724).

The spelling of 1243041303 in words is "one billion, two hundred forty-three million, forty-one thousand, three hundred three".