131347666 has 8 divisors (see below), whose sum is σ = 199395504. Its totient is φ = 64882500.

The previous prime is 131347663. The next prime is 131347673. The reversal of 131347666 is 666743131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (131347663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 395460 + ... + 395791.

It is an arithmetic number, because the mean of its divisors is an integer number (24924438).

Almost surely, 2^131347666 is an apocalyptic number.

131347666 is a deficient number, since it is larger than the sum of its proper divisors (68047838).

131347666 is an equidigital number, since it uses as much as digits as its factorization.

131347666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791336.

The product of its digits is 54432, while the sum is 37.

The square root of 131347666 is about 11460.7009384243. The cubic root of 131347666 is about 508.3242009527.

The spelling of 131347666 in words is "one hundred thirty-one million, three hundred forty-seven thousand, six hundred sixty-six".