131520132 has 48 divisors (see below), whose sum is σ = 343470400. Its totient is φ = 43519680.

The previous prime is 131520127. The next prime is 131520149. The reversal of 131520132 is 231025131.

131520132 is a `hidden beast` number, since 13 + 1 + 520 + 132 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10632 + ... + 19392.

Almost surely, 2^131520132 is an apocalyptic number.

131520132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131520132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171735200).

131520132 is an abundant number, since it is smaller than the sum of its proper divisors (211950268).

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

131520132 is a wasteful number, since it uses less digits than its factorization.

131520132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8913 (or 8905 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 131520132 is about 11468.2227044996. Note that the first 3 decimals coincide. The cubic root of 131520132 is about 508.5465886083.

Adding to 131520132 its reverse (231025131), we get a palindrome (362545263).

The spelling of 131520132 in words is "one hundred thirty-one million, five hundred twenty thousand, one hundred thirty-two".