3121103110133 has 4 divisors (see below), whose sum is σ = 3228727355340. Its totient is φ = 3013478864928.

The previous prime is 3121103110127. The next prime is 3121103110187. The reversal of 3121103110133 is 3310113011213.

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 1570126784209 + 1550976325924 = 1253047^2 + 1245382^2 .

It is a cyclic number.

It is not a de Polignac number, because 3121103110133 - 2¹⁰ = 3121103109109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121103110123) 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, 53812122560 + ... + 53812122617.

It is an arithmetic number, because the mean of its divisors is an integer number (807181838835).

Almost surely, 2^{3121103110133} is an apocalyptic number.

It is an amenable number.

3121103110133 is a deficient number, since it is larger than the sum of its proper divisors (107624245207).

3121103110133 is a wasteful number, since it uses less digits than its factorization.

3121103110133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107624245206.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 3121103110133 its reverse (3310113011213), we get a palindrome (6431216121346).

It can be divided in two parts, 312110 and 3110133, that added together give a palindrome (3422243).

The spelling of 3121103110133 in words is "three trillion, one hundred twenty-one billion, one hundred three million, one hundred ten thousand, one hundred thirty-three".