3121000003717 has 2 divisors, whose sum is σ = 3121000003718. Its totient is φ = 3121000003716.

The previous prime is 3121000003697. The next prime is 3121000003727. The reversal of 3121000003717 is 7173000001213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2851930602756 + 269069400961 = 1688766^2 + 518719^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3121000003717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3121000003691 and 3121000003700.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3121000003727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560500001858 + 1560500001859.

It is an arithmetic number, because the mean of its divisors is an integer number (1560500001859).

Almost surely, 2^{3121000003717} is an apocalyptic number.

It is an amenable number.

3121000003717 is a deficient number, since it is larger than the sum of its proper divisors (1).

3121000003717 is an equidigital number, since it uses as much as digits as its factorization.

3121000003717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 882, while the sum is 25.

The spelling of 3121000003717 in words is "three trillion, one hundred twenty-one billion, three thousand, seven hundred seventeen".