131537563 has 2 divisors, whose sum is σ = 131537564. Its totient is φ = 131537562.

The previous prime is 131537543. The next prime is 131537569. The reversal of 131537563 is 365735131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131537563 - 2¹⁷ = 131406491 is a prime.

It is a super-3 number, since 3×131537563³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (131537569) 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, 65768781 + 65768782.

It is an arithmetic number, because the mean of its divisors is an integer number (65768782).

Almost surely, 2^131537563 is an apocalyptic number.

131537563 is a deficient number, since it is larger than the sum of its proper divisors (1).

131537563 is an equidigital number, since it uses as much as digits as its factorization.

131537563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28350, while the sum is 34.

The square root of 131537563 is about 11468.9826488665. The cubic root of 131537563 is about 508.5690543298.

The spelling of 131537563 in words is "one hundred thirty-one million, five hundred thirty-seven thousand, five hundred sixty-three".