1213131230013 has 16 divisors (see below), whose sum is σ = 1718582019840. Its totient is φ = 761180370368.

The previous prime is 1213131230011. The next prime is 1213131230053. The reversal of 1213131230013 is 3100321313121.

It is a happy number.

It is not a de Polignac number, because 1213131230013 - 2¹ = 1213131230011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213131230011) 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 15 ways as a sum of consecutive naturals, for example, 41139045 + ... + 41168522.

It is an arithmetic number, because the mean of its divisors is an integer number (107411376240).

Almost surely, 2^{1213131230013} is an apocalyptic number.

It is an amenable number.

1213131230013 is a deficient number, since it is larger than the sum of its proper divisors (505450789827).

1213131230013 is an frugal number, since it uses more digits than its factorization.

1213131230013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82307621 (or 82307587 counting only the distinct ones).

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

Adding to 1213131230013 its reverse (3100321313121), we get a palindrome (4313452543134).

The spelling of 1213131230013 in words is "one trillion, two hundred thirteen billion, one hundred thirty-one million, two hundred thirty thousand, thirteen".