1213303112303 has 4 divisors (see below), whose sum is σ = 1213431283080. Its totient is φ = 1213174941528.

The previous prime is 1213303112297. The next prime is 1213303112327. The reversal of 1213303112303 is 3032113033121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213303112303 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 (1213303112363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64071188 + ... + 64090121.

It is an arithmetic number, because the mean of its divisors is an integer number (303357820770).

Almost surely, 2^{1213303112303} is an apocalyptic number.

1213303112303 is a deficient number, since it is larger than the sum of its proper divisors (128170777).

1213303112303 is an equidigital number, since it uses as much as digits as its factorization.

1213303112303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128170776.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 1213303112303 its reverse (3032113033121), we get a palindrome (4245416145424).

The spelling of 1213303112303 in words is "one trillion, two hundred thirteen billion, three hundred three million, one hundred twelve thousand, three hundred three".