131366563 has 2 divisors, whose sum is σ = 131366564. Its totient is φ = 131366562.

The previous prime is 131366483. The next prime is 131366569. The reversal of 131366563 is 365663131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131366563 - 2⁹ = 131366051 is a prime.

It is equal to p_7451359 and since 131366563 and 7451359 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (131366569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65683281 + 65683282.

It is an arithmetic number, because the mean of its divisors is an integer number (65683282).

Almost surely, 2^131366563 is an apocalyptic number.

131366563 is a deficient number, since it is larger than the sum of its proper divisors (1).

131366563 is an equidigital number, since it uses as much as digits as its factorization.

131366563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29160, while the sum is 34.

The square root of 131366563 is about 11461.5253347886. The cubic root of 131366563 is about 508.3485773326.

It can be divided in two parts, 1313 and 66563, that added together give a palindrome (67876).

The spelling of 131366563 in words is "one hundred thirty-one million, three hundred sixty-six thousand, five hundred sixty-three".