131649252 has 48 divisors (see below), whose sum is σ = 369546240. Its totient is φ = 35633952.

The previous prime is 131649229. The next prime is 131649253. The reversal of 131649252 is 252946131.

It is not an unprimeable number, because it can be changed into a prime (131649253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39648 + ... + 42839.

It is an arithmetic number, because the mean of its divisors is an integer number (7698880).

Almost surely, 2^131649252 is an apocalyptic number.

131649252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131649252 is an abundant number, since it is smaller than the sum of its proper divisors (237896988).

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

131649252 is a wasteful number, since it uses less digits than its factorization.

131649252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82520 (or 82518 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 131649252 is about 11473.8507921273. The cubic root of 131649252 is about 508.7129561897.

The spelling of 131649252 in words is "one hundred thirty-one million, six hundred forty-nine thousand, two hundred fifty-two".