3121403221311 has 16 divisors (see below), whose sum is σ = 4384089191040. Its totient is φ = 1969984985760.

The previous prime is 3121403221267. The next prime is 3121403221333. The reversal of 3121403221311 is 1131223041213.

3121403221311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3121403221311 - 2¹⁸ = 3121402959167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121403221411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19748025 + ... + 19905458.

It is an arithmetic number, because the mean of its divisors is an integer number (274005574440).

Almost surely, 2^{3121403221311} is an apocalyptic number.

3121403221311 is a deficient number, since it is larger than the sum of its proper divisors (1262685969729).

3121403221311 is a wasteful number, since it uses less digits than its factorization.

3121403221311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39654886.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 3121403221311 its reverse (1131223041213), we get a palindrome (4252626262524).

The spelling of 3121403221311 in words is "three trillion, one hundred twenty-one billion, four hundred three million, two hundred twenty-one thousand, three hundred eleven".