131242437065 has 8 divisors (see below), whose sum is σ = 158003926080. Its totient is φ = 104651948592.

The previous prime is 131242437047. The next prime is 131242437071. The reversal of 131242437065 is 560734242131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131242437065 is a prime.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 42748445 + ... + 42751514.

It is an arithmetic number, because the mean of its divisors is an integer number (19750490760).

Almost surely, 2^131242437065 is an apocalyptic number.

It is an amenable number.

131242437065 is a deficient number, since it is larger than the sum of its proper divisors (26761489015).

131242437065 is an equidigital number, since it uses as much as digits as its factorization.

131242437065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85500271.

The product of its (nonzero) digits is 120960, while the sum is 38.

Adding to 131242437065 its reverse (560734242131), we get a palindrome (691976679196).

The spelling of 131242437065 in words is "one hundred thirty-one billion, two hundred forty-two million, four hundred thirty-seven thousand, sixty-five".