131661037 has 8 divisors (see below), whose sum is σ = 134467200. Its totient is φ = 128874144.

The previous prime is 131661017. The next prime is 131661043. The reversal of 131661037 is 730166131.

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 131661037 - 2¹⁹ = 131136749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131660996 and 131661014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131661017) by changing a digit.

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, 9433 + ... + 18769.

It is an arithmetic number, because the mean of its divisors is an integer number (16808400).

Almost surely, 2^131661037 is an apocalyptic number.

It is an amenable number.

131661037 is a deficient number, since it is larger than the sum of its proper divisors (2806163).

131661037 is an equidigital number, since it uses as much as digits as its factorization.

131661037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9635.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 131661037 is about 11474.3643396922. The cubic root of 131661037 is about 508.7281354210.

The spelling of 131661037 in words is "one hundred thirty-one million, six hundred sixty-one thousand, thirty-seven".