1231200033103 has 12 divisors (see below), whose sum is σ = 1307923864240. Its totient is φ = 1158740980992.

The previous prime is 1231200033101. The next prime is 1231200033109. The reversal of 1231200033103 is 3013300021321.

It is not a de Polignac number, because 1231200033103 - 2¹ = 1231200033101 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 (1231200033101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18307243 + ... + 18374371.

Almost surely, 2^{1231200033103} is an apocalyptic number.

1231200033103 is a deficient number, since it is larger than the sum of its proper divisors (76723831137).

1231200033103 is an equidigital number, since it uses as much as digits as its factorization.

1231200033103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130626 (or 130609 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 1231200033103 its reverse (3013300021321), we get a palindrome (4244500054424).

The spelling of 1231200033103 in words is "one trillion, two hundred thirty-one billion, two hundred million, thirty-three thousand, one hundred three".