131637761 has 8 divisors (see below), whose sum is σ = 133839360. Its totient is φ = 129447072.

The previous prime is 131637721. The next prime is 131637767. The reversal of 131637761 is 167736131.

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 131637761 - 2¹⁰ = 131636737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131637767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23696 + ... + 28718.

It is an arithmetic number, because the mean of its divisors is an integer number (16729920).

Almost surely, 2^131637761 is an apocalyptic number.

It is an amenable number.

131637761 is a deficient number, since it is larger than the sum of its proper divisors (2201599).

131637761 is an equidigital number, since it uses as much as digits as its factorization.

131637761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5455.

The product of its digits is 15876, while the sum is 35.

The square root of 131637761 is about 11473.3500338829. The cubic root of 131637761 is about 508.6981547620.

The spelling of 131637761 in words is "one hundred thirty-one million, six hundred thirty-seven thousand, seven hundred sixty-one".