131435265 has 32 divisors (see below), whose sum is σ = 231307776. Its totient is φ = 63325440.

The previous prime is 131435263. The next prime is 131435281. The reversal of 131435265 is 562534131.

It is not a de Polignac number, because 131435265 - 2¹ = 131435263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131435261) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1995 + ... + 16335.

It is an arithmetic number, because the mean of its divisors is an integer number (7228368).

Almost surely, 2^131435265 is an apocalyptic number.

131435265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131435265 is a deficient number, since it is larger than the sum of its proper divisors (99872511).

131435265 is a wasteful number, since it uses less digits than its factorization.

131435265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14409.

The product of its digits is 10800, while the sum is 30.

The square root of 131435265 is about 11464.5220135861. The cubic root of 131435265 is about 508.4371804917.

Adding to 131435265 its reverse (562534131), we get a palindrome (693969396).

The spelling of 131435265 in words is "one hundred thirty-one million, four hundred thirty-five thousand, two hundred sixty-five".