131665832 has 16 divisors (see below), whose sum is σ = 253546260. Its totient is φ = 64053504.

The previous prime is 131665819. The next prime is 131665837. The reversal of 131665832 is 238566131.

It can be written as a sum of positive squares in 2 ways, for example, as 120868036 + 10797796 = 10994^2 + 3286^2 .

It is a junction number, because it is equal to n+sod(n) for n = 131665792 and 131665801.

It is not an unprimeable number, because it can be changed into a prime (131665837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222113 + ... + 222704.

Almost surely, 2^131665832 is an apocalyptic number.

It is an amenable number.

131665832 is a deficient number, since it is larger than the sum of its proper divisors (121880428).

131665832 is a wasteful number, since it uses less digits than its factorization.

131665832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444860 (or 444856 counting only the distinct ones).

The product of its digits is 25920, while the sum is 35.

The square root of 131665832 is about 11474.5732818262. The cubic root of 131665832 is about 508.7343111832.

The spelling of 131665832 in words is "one hundred thirty-one million, six hundred sixty-five thousand, eight hundred thirty-two".