1243131201103 has 16 divisors (see below), whose sum is σ = 1357273164672. Its totient is φ = 1129177980000.

The previous prime is 1243131201083. The next prime is 1243131201121. The reversal of 1243131201103 is 3011021313421.

It is a cyclic number.

It is not a de Polignac number, because 1243131201103 - 2³⁷ = 1105692247631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243131201173) 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, 88718368 + ... + 88732378.

It is an arithmetic number, because the mean of its divisors is an integer number (84829572792).

Almost surely, 2^{1243131201103} is an apocalyptic number.

1243131201103 is a deficient number, since it is larger than the sum of its proper divisors (114141963569).

1243131201103 is a wasteful number, since it uses less digits than its factorization.

1243131201103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20166.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1243131201103 its reverse (3011021313421), we get a palindrome (4254152514524).

The spelling of 1243131201103 in words is "one trillion, two hundred forty-three billion, one hundred thirty-one million, two hundred one thousand, one hundred three".