3121102320213 has 4 divisors (see below), whose sum is σ = 4161469760288. Its totient is φ = 2080734880140.

The previous prime is 3121102320199. The next prime is 3121102320221. The reversal of 3121102320213 is 3120232011213.

3121102320213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 3121102320213 - 2⁴ = 3121102320197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3121102320213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121102320233) 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, 520183720033 + ... + 520183720038.

It is an arithmetic number, because the mean of its divisors is an integer number (1040367440072).

Almost surely, 2^{3121102320213} is an apocalyptic number.

It is an amenable number.

3121102320213 is a deficient number, since it is larger than the sum of its proper divisors (1040367440075).

3121102320213 is a wasteful number, since it uses less digits than its factorization.

3121102320213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040367440074.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 3121102320213 its reverse (3120232011213), we get a palindrome (6241334331426).

The spelling of 3121102320213 in words is "three trillion, one hundred twenty-one billion, one hundred two million, three hundred twenty thousand, two hundred thirteen".