131965775 has 12 divisors (see below), whose sum is σ = 165170232. Its totient is φ = 104583840.

The previous prime is 131965741. The next prime is 131965793. The reversal of 131965775 is 577569131.

It is not a de Polignac number, because 131965775 - 2¹⁸ = 131703631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21992 + ... + 27341.

It is an arithmetic number, because the mean of its divisors is an integer number (13764186).

Almost surely, 2^131965775 is an apocalyptic number.

131965775 is a deficient number, since it is larger than the sum of its proper divisors (33204457).

131965775 is a wasteful number, since it uses less digits than its factorization.

131965775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49450 (or 49445 counting only the distinct ones).

The product of its digits is 198450, while the sum is 44.

The square root of 131965775 is about 11487.6357445734. The cubic root of 131965775 is about 509.1203277343.

The spelling of 131965775 in words is "one hundred thirty-one million, nine hundred sixty-five thousand, seven hundred seventy-five".