1213312003113 has 64 divisors (see below), whose sum is σ = 1870829291520. Its totient is φ = 685143360000.

The previous prime is 1213312003109. The next prime is 1213312003121. The reversal of 1213312003113 is 3113002133121.

It is a happy number.

It is not a de Polignac number, because 1213312003113 - 2² = 1213312003109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1213312003113.

It is not an unprimeable number, because it can be changed into a prime (1213312003103) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 510437181 + ... + 510439557.

It is an arithmetic number, because the mean of its divisors is an integer number (29231707680).

Almost surely, 2^{1213312003113} is an apocalyptic number.

It is an amenable number.

1213312003113 is a deficient number, since it is larger than the sum of its proper divisors (657517288407).

1213312003113 is a wasteful number, since it uses less digits than its factorization.

1213312003113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3358.

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

Adding to 1213312003113 its reverse (3113002133121), we get a palindrome (4326314136234).

The spelling of 1213312003113 in words is "one trillion, two hundred thirteen billion, three hundred twelve million, three thousand, one hundred thirteen".