517173131 has 2 divisors, whose sum is σ = 517173132. Its totient is φ = 517173130.

The previous prime is 517173077. The next prime is 517173143. The reversal of 517173131 is 131371715.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 517173131 - 2¹⁰ = 517172107 is a prime.

It is a super-2 number, since 2×517173131² = 534936094856686322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 517173094 and 517173103.

It is not a weakly prime, because it can be changed into another prime (517173191) 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, 258586565 + 258586566.

It is an arithmetic number, because the mean of its divisors is an integer number (258586566).

Almost surely, 2^517173131 is an apocalyptic number.

517173131 is a deficient number, since it is larger than the sum of its proper divisors (1).

517173131 is an equidigital number, since it uses as much as digits as its factorization.

517173131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2205, while the sum is 29.

The square root of 517173131 is about 22741.4408294637. The cubic root of 517173131 is about 802.6853153293.

The spelling of 517173131 in words is "five hundred seventeen million, one hundred seventy-three thousand, one hundred thirty-one".