3101936901781 has 2 divisors, whose sum is σ = 3101936901782. Its totient is φ = 3101936901780.

The previous prime is 3101936901737. The next prime is 3101936901799. The reversal of 3101936901781 is 1871096391013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3094309674225 + 7627227556 = 1759065^2 + 87334^2 .

It is a cyclic number.

It is not a de Polignac number, because 3101936901781 - 2¹³ = 3101936893589 is a prime.

It is a super-2 number, since 2×3101936901781² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3101936902781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1550968450890 + 1550968450891.

It is an arithmetic number, because the mean of its divisors is an integer number (1550968450891).

Almost surely, 2^{3101936901781} is an apocalyptic number.

It is an amenable number.

3101936901781 is a deficient number, since it is larger than the sum of its proper divisors (1).

3101936901781 is an equidigital number, since it uses as much as digits as its factorization.

3101936901781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 49.

The spelling of 3101936901781 in words is "three trillion, one hundred one billion, nine hundred thirty-six million, nine hundred one thousand, seven hundred eighty-one".