3121330201313 has 4 divisors (see below), whose sum is σ = 3187741482240. Its totient is φ = 3054918920388.

The previous prime is 3121330201247. The next prime is 3121330201321. The reversal of 3121330201313 is 3131020331213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3121330201313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3121330201373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33205640393 + ... + 33205640486.

It is an arithmetic number, because the mean of its divisors is an integer number (796935370560).

Almost surely, 2^{3121330201313} is an apocalyptic number.

It is an amenable number.

3121330201313 is a deficient number, since it is larger than the sum of its proper divisors (66411280927).

3121330201313 is an equidigital number, since it uses as much as digits as its factorization.

3121330201313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66411280926.

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

Adding to 3121330201313 its reverse (3131020331213), we get a palindrome (6252350532526).

The spelling of 3121330201313 in words is "three trillion, one hundred twenty-one billion, three hundred thirty million, two hundred one thousand, three hundred thirteen".