131364517 has 2 divisors, whose sum is σ = 131364518. Its totient is φ = 131364516.

The previous prime is 131364487. The next prime is 131364529. The reversal of 131364517 is 715463131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129072321 + 2292196 = 11361^2 + 1514^2 .

It is an emirp because it is prime and its reverse (715463131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131364517 is a prime.

It is equal to p_7451248 and since 131364517 and 7451248 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131364547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65682258 + 65682259.

It is an arithmetic number, because the mean of its divisors is an integer number (65682259).

Almost surely, 2^131364517 is an apocalyptic number.

It is an amenable number.

131364517 is a deficient number, since it is larger than the sum of its proper divisors (1).

131364517 is an equidigital number, since it uses as much as digits as its factorization.

131364517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 31.

The square root of 131364517 is about 11461.4360793052. The cubic root of 131364517 is about 508.3459381867.

The spelling of 131364517 in words is "one hundred thirty-one million, three hundred sixty-four thousand, five hundred seventeen".