3121683343741 has 2 divisors, whose sum is σ = 3121683343742. Its totient is φ = 3121683343740.

The previous prime is 3121683343729. The next prime is 3121683343837. The reversal of 3121683343741 is 1473433861213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2259114211225 + 862569132516 = 1503035^2 + 928746^2 .

It is an emirp because it is prime and its reverse (1473433861213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3121683343741 - 2¹⁵ = 3121683310973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3121683343691 and 3121683343700.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3121683343241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560841671870 + 1560841671871.

It is an arithmetic number, because the mean of its divisors is an integer number (1560841671871).

Almost surely, 2^{3121683343741} is an apocalyptic number.

It is an amenable number.

3121683343741 is a deficient number, since it is larger than the sum of its proper divisors (1).

3121683343741 is an equidigital number, since it uses as much as digits as its factorization.

3121683343741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 46.

The spelling of 3121683343741 in words is "three trillion, one hundred twenty-one billion, six hundred eighty-three million, three hundred forty-three thousand, seven hundred forty-one".