131976766 has 4 divisors (see below), whose sum is σ = 197965152. Its totient is φ = 65988382.

The previous prime is 131976751. The next prime is 131976769. The reversal of 131976766 is 667679131.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131976769) 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 as a sum of consecutive naturals, namely, 32994190 + ... + 32994193.

It is an arithmetic number, because the mean of its divisors is an integer number (49491288).

Almost surely, 2^131976766 is an apocalyptic number.

131976766 is a deficient number, since it is larger than the sum of its proper divisors (65988386).

131976766 is an equidigital number, since it uses as much as digits as its factorization.

131976766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65988385.

The product of its digits is 285768, while the sum is 46.

The square root of 131976766 is about 11488.1141185140. The cubic root of 131976766 is about 509.1344616671.

The spelling of 131976766 in words is "one hundred thirty-one million, nine hundred seventy-six thousand, seven hundred sixty-six".