131666244 has 48 divisors (see below), whose sum is σ = 313709760. Its totient is φ = 42972160.

The previous prime is 131666209. The next prime is 131666251. The reversal of 131666244 is 442666131.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120139 + ... + 121229.

It is an arithmetic number, because the mean of its divisors is an integer number (6535620).

Almost surely, 2^131666244 is an apocalyptic number.

It is an amenable number.

131666244 is an abundant number, since it is smaller than the sum of its proper divisors (182043516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131666244 is a wasteful number, since it uses less digits than its factorization.

131666244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300 (or 1298 counting only the distinct ones).

The product of its digits is 20736, while the sum is 33.

The square root of 131666244 is about 11474.5912345495. The cubic root of 131666244 is about 508.7348418152.

The spelling of 131666244 in words is "one hundred thirty-one million, six hundred sixty-six thousand, two hundred forty-four".