131265783 has 24 divisors (see below), whose sum is σ = 211251456. Its totient is φ = 77859600.

The previous prime is 131265767. The next prime is 131265809. The reversal of 131265783 is 387562131.

It is not a de Polignac number, because 131265783 - 2⁴ = 131265767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131265763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9453 + ... + 18758.

It is an arithmetic number, because the mean of its divisors is an integer number (8802144).

Almost surely, 2^131265783 is an apocalyptic number.

131265783 is a deficient number, since it is larger than the sum of its proper divisors (79985673).

131265783 is a wasteful number, since it uses less digits than its factorization.

131265783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28275 (or 28272 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 131265783 is about 11457.1280432751. The cubic root of 131265783 is about 508.2185481099.

The spelling of 131265783 in words is "one hundred thirty-one million, two hundred sixty-five thousand, seven hundred eighty-three".