131765265 has 16 divisors (see below), whose sum is σ = 234249600. Its totient is φ = 70274736.

The previous prime is 131765243. The next prime is 131765273. The reversal of 131765265 is 562567131.

It is not a de Polignac number, because 131765265 - 2¹⁷ = 131634193 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 487885 + ... + 488154.

It is an arithmetic number, because the mean of its divisors is an integer number (14640600).

Almost surely, 2^131765265 is an apocalyptic number.

131765265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131765265 is a deficient number, since it is larger than the sum of its proper divisors (102484335).

131765265 is an equidigital number, since it uses as much as digits as its factorization.

131765265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976053 (or 976047 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 131765265 is about 11478.9052178333. The cubic root of 131765265 is about 508.8623430083.

The spelling of 131765265 in words is "one hundred thirty-one million, seven hundred sixty-five thousand, two hundred sixty-five".