1312100330213 has 4 divisors (see below), whose sum is σ = 1312857458508. Its totient is φ = 1311343201920.

The previous prime is 1312100330141. The next prime is 1312100330221. The reversal of 1312100330213 is 3120330012131.

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

It can be written as a sum of positive squares in 2 ways, for example, as 443405496769 + 868694833444 = 665887^2 + 932038^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312100330213 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 (1312100300213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378561548 + ... + 378565013.

It is an arithmetic number, because the mean of its divisors is an integer number (328214364627).

Almost surely, 2^{1312100330213} is an apocalyptic number.

It is an amenable number.

1312100330213 is a deficient number, since it is larger than the sum of its proper divisors (757128295).

1312100330213 is an equidigital number, since it uses as much as digits as its factorization.

1312100330213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757128294.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 1312100330213 its reverse (3120330012131), we get a palindrome (4432430342344).

The spelling of 1312100330213 in words is "one trillion, three hundred twelve billion, one hundred million, three hundred thirty thousand, two hundred thirteen".