3121130100133 has 4 divisors (see below), whose sum is σ = 3121246582668. Its totient is φ = 3121013617600.

The previous prime is 3121130100079. The next prime is 3121130100139. The reversal of 3121130100133 is 3310010311213.

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 1663950363364 + 1457179736769 = 1289942^2 + 1207137^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3121130100133 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 3121130100133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121130100139) 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, 58201066 + ... + 58254667.

It is an arithmetic number, because the mean of its divisors is an integer number (780311645667).

Almost surely, 2^{3121130100133} is an apocalyptic number.

It is an amenable number.

3121130100133 is a deficient number, since it is larger than the sum of its proper divisors (116482535).

3121130100133 is a wasteful number, since it uses less digits than its factorization.

3121130100133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116482534.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 3121130100133 its reverse (3310010311213), we get a palindrome (6431140411346).

The spelling of 3121130100133 in words is "three trillion, one hundred twenty-one billion, one hundred thirty million, one hundred thousand, one hundred thirty-three".