131567505 has 16 divisors (see below), whose sum is σ = 222891264. Its totient is φ = 66041600.

The previous prime is 131567477. The next prime is 131567507. The reversal of 131567505 is 505765131.

It is not a de Polignac number, because 131567505 - 2⁷ = 131567377 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131567507) 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 in 15 ways as a sum of consecutive naturals, for example, 257721 + ... + 258230.

It is an arithmetic number, because the mean of its divisors is an integer number (13930704).

Almost surely, 2^131567505 is an apocalyptic number.

131567505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131567505 is a deficient number, since it is larger than the sum of its proper divisors (91323759).

131567505 is a wasteful number, since it uses less digits than its factorization.

131567505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515976.

The product of its (nonzero) digits is 15750, while the sum is 33.

The square root of 131567505 is about 11470.2879214081. The cubic root of 131567505 is about 508.6076400616.

The spelling of 131567505 in words is "one hundred thirty-one million, five hundred sixty-seven thousand, five hundred five".