131440340566 has 8 divisors (see below), whose sum is σ = 203520527424. Its totient is φ = 63600164760.

The previous prime is 131440340543. The next prime is 131440340567. The reversal of 131440340566 is 665043044131.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131440340567) 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, 1060002685 + ... + 1060002808.

It is an arithmetic number, because the mean of its divisors is an integer number (25440065928).

Almost surely, 2^131440340566 is an apocalyptic number.

131440340566 is a deficient number, since it is larger than the sum of its proper divisors (72080186858).

131440340566 is a wasteful number, since it uses less digits than its factorization.

131440340566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2120005526.

The product of its (nonzero) digits is 103680, while the sum is 37.

Adding to 131440340566 its reverse (665043044131), we get a palindrome (796483384697).

The spelling of 131440340566 in words is "one hundred thirty-one billion, four hundred forty million, three hundred forty thousand, five hundred sixty-six".