131551532 has 12 divisors (see below), whose sum is σ = 263103120. Its totient is φ = 56379216.

The previous prime is 131551531. The next prime is 131551561. The reversal of 131551532 is 235155131.

It is a happy number.

131551532 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (131551531) 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, 2349107 + ... + 2349162.

It is an arithmetic number, because the mean of its divisors is an integer number (21925260).

Almost surely, 2^131551532 is an apocalyptic number.

It is an amenable number.

131551532 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131551532 is a wasteful number, since it uses less digits than its factorization.

131551532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4698280 (or 4698278 counting only the distinct ones).

The product of its digits is 2250, while the sum is 26.

The square root of 131551532 is about 11469.5916230701. The cubic root of 131551532 is about 508.5870566644.

The spelling of 131551532 in words is "one hundred thirty-one million, five hundred fifty-one thousand, five hundred thirty-two".