131889532 has 12 divisors (see below), whose sum is σ = 232850016. Its totient is φ = 65360960.

The previous prime is 131889509. The next prime is 131889533. The reversal of 131889532 is 235988131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131889533) 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, 145444 + ... + 146347.

It is an arithmetic number, because the mean of its divisors is an integer number (19404168).

Almost surely, 2^131889532 is an apocalyptic number.

It is an amenable number.

131889532 is a deficient number, since it is larger than the sum of its proper divisors (100960484).

131889532 is a wasteful number, since it uses less digits than its factorization.

131889532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291908 (or 291906 counting only the distinct ones).

The product of its digits is 51840, while the sum is 40.

The square root of 131889532 is about 11484.3167842062. The cubic root of 131889532 is about 509.0222610474.

The spelling of 131889532 in words is "one hundred thirty-one million, eight hundred eighty-nine thousand, five hundred thirty-two".