131003665761 has 8 divisors (see below), whose sum is σ = 175120583040. Its totient is φ = 87111262832.

The previous prime is 131003665759. The next prime is 131003665781. The reversal of 131003665761 is 167566300131.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 131003665761 - 2¹ = 131003665759 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131003665781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56127225 + ... + 56129558.

It is an arithmetic number, because the mean of its divisors is an integer number (21890072880).

Almost surely, 2^131003665761 is an apocalyptic number.

It is an amenable number.

131003665761 is a deficient number, since it is larger than the sum of its proper divisors (44116917279).

131003665761 is a wasteful number, since it uses less digits than its factorization.

131003665761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112257175.

The product of its (nonzero) digits is 68040, while the sum is 39.

Adding to 131003665761 its reverse (167566300131), we get a palindrome (298569965892).

The spelling of 131003665761 in words is "one hundred thirty-one billion, three million, six hundred sixty-five thousand, seven hundred sixty-one".