2131033066517 has 2 divisors, whose sum is σ = 2131033066518. Its totient is φ = 2131033066516.

The previous prime is 2131033066429. The next prime is 2131033066579. The reversal of 2131033066517 is 7156603301312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1456284178756 + 674748887761 = 1206766^2 + 821431^2 .

It is a cyclic number.

It is not a de Polignac number, because 2131033066517 - 2³⁰ = 2129959324693 is a prime.

It is a super-2 number, since 2×2131033066517² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2131033066417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065516533258 + 1065516533259.

It is an arithmetic number, because the mean of its divisors is an integer number (1065516533259).

Almost surely, 2^{2131033066517} is an apocalyptic number.

It is an amenable number.

2131033066517 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131033066517 is an equidigital number, since it uses as much as digits as its factorization.

2131033066517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 38.

Adding to 2131033066517 its reverse (7156603301312), we get a palindrome (9287636367829).

The spelling of 2131033066517 in words is "two trillion, one hundred thirty-one billion, thirty-three million, sixty-six thousand, five hundred seventeen".