1243343210403 has 64 divisors (see below), whose sum is σ = 2063922969600. Its totient is φ = 649620518400.

The previous prime is 1243343210363. The next prime is 1243343210477. The reversal of 1243343210403 is 3040123433421.

It is a happy number.

It is not a de Polignac number, because 1243343210403 - 2²⁸ = 1243074774947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1243343220403) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 31140753 + ... + 31180653.

It is an arithmetic number, because the mean of its divisors is an integer number (32248796400).

Almost surely, 2^{1243343210403} is an apocalyptic number.

1243343210403 is a deficient number, since it is larger than the sum of its proper divisors (820579759197).

1243343210403 is a wasteful number, since it uses less digits than its factorization.

1243343210403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42652.

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 1243343210403 its reverse (3040123433421), we get a palindrome (4283466643824).

The spelling of 1243343210403 in words is "one trillion, two hundred forty-three billion, three hundred forty-three million, two hundred ten thousand, four hundred three".