131563852517 has 2 divisors, whose sum is σ = 131563852518. Its totient is φ = 131563852516.

The previous prime is 131563852451. The next prime is 131563852583. The reversal of 131563852517 is 715258365131.

It is a balanced prime because it is at equal distance from previous prime (131563852451) and next prime (131563852583).

It can be written as a sum of positive squares in only one way, i.e., 94503367396 + 37060485121 = 307414^2 + 192511^2 .

It is a cyclic number.

It is not a de Polignac number, because 131563852517 - 2¹⁸ = 131563590373 is a prime.

It is a super-2 number, since 2×131563852517² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131563852117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65781926258 + 65781926259.

It is an arithmetic number, because the mean of its divisors is an integer number (65781926259).

Almost surely, 2^131563852517 is an apocalyptic number.

It is an amenable number.

131563852517 is a deficient number, since it is larger than the sum of its proper divisors (1).

131563852517 is an equidigital number, since it uses as much as digits as its factorization.

131563852517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 756000, while the sum is 47.

The spelling of 131563852517 in words is "one hundred thirty-one billion, five hundred sixty-three million, eight hundred fifty-two thousand, five hundred seventeen".