1213131203103 has 8 divisors (see below), whose sum is σ = 1617532299648. Its totient is φ = 808742120984.

The previous prime is 1213131203093. The next prime is 1213131203111. The reversal of 1213131203103 is 3013021313121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1213131203103 - 2⁴ = 1213131203087 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1213131203103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213131203503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2765301 + ... + 3173822.

It is an arithmetic number, because the mean of its divisors is an integer number (202191537456).

Almost surely, 2^{1213131203103} is an apocalyptic number.

1213131203103 is a deficient number, since it is larger than the sum of its proper divisors (404401096545).

1213131203103 is an equidigital number, since it uses as much as digits as its factorization.

1213131203103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6007213.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1213131203103 its reverse (3013021313121), we get a palindrome (4226152516224).

The spelling of 1213131203103 in words is "one trillion, two hundred thirteen billion, one hundred thirty-one million, two hundred three thousand, one hundred three".