131806766 has 48 divisors (see below), whose sum is σ = 249224976. Its totient is φ = 51819264.

The previous prime is 131806757. The next prime is 131806771. The reversal of 131806766 is 667608131.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 390950 + ... + 391286.

It is an arithmetic number, because the mean of its divisors is an integer number (5192187).

Almost surely, 2^131806766 is an apocalyptic number.

131806766 is a deficient number, since it is larger than the sum of its proper divisors (117418210).

131806766 is a wasteful number, since it uses less digits than its factorization.

131806766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673 (or 666 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 131806766 is about 11480.7127827500. The cubic root of 131806766 is about 508.9157614347.

The spelling of 131806766 in words is "one hundred thirty-one million, eight hundred six thousand, seven hundred sixty-six".