3116520262181 has 2 divisors, whose sum is σ = 3116520262182. Its totient is φ = 3116520262180.

The previous prime is 3116520262129. The next prime is 3116520262183. The reversal of 3116520262181 is 1812620256113.

3116520262181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2665562349025 + 450957913156 = 1632655^2 + 671534^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3116520262181 is a prime.

It is a super-2 number, since 2×3116520262181² (a number of 26 digits) contains 22 as substring.

Together with 3116520262183, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3116520262183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1558260131090 + 1558260131091.

It is an arithmetic number, because the mean of its divisors is an integer number (1558260131091).

Almost surely, 2^{3116520262181} is an apocalyptic number.

It is an amenable number.

3116520262181 is a deficient number, since it is larger than the sum of its proper divisors (1).

3116520262181 is an equidigital number, since it uses as much as digits as its factorization.

3116520262181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 38.

The spelling of 3116520262181 in words is "three trillion, one hundred sixteen billion, five hundred twenty million, two hundred sixty-two thousand, one hundred eighty-one".