131944042761 has 8 divisors (see below), whose sum is σ = 177667226304. Its totient is φ = 87091777200.

The previous prime is 131944042759. The next prime is 131944042823. The reversal of 131944042761 is 167240449131.

It is a happy number.

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

It is not a de Polignac number, because 131944042761 - 2¹ = 131944042759 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131944042721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217729141 + ... + 217729746.

It is an arithmetic number, because the mean of its divisors is an integer number (22208403288).

Almost surely, 2^131944042761 is an apocalyptic number.

It is an amenable number.

131944042761 is a deficient number, since it is larger than the sum of its proper divisors (45723183543).

131944042761 is a wasteful number, since it uses less digits than its factorization.

131944042761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435458991.

The product of its (nonzero) digits is 145152, while the sum is 42.

The spelling of 131944042761 in words is "one hundred thirty-one billion, nine hundred forty-four million, forty-two thousand, seven hundred sixty-one".