131216132 has 12 divisors (see below), whose sum is σ = 243135900. Its totient is φ = 61748736.

The previous prime is 131216119. The next prime is 131216143. The reversal of 131216132 is 231612131.

It can be written as a sum of positive squares in 2 ways, for example, as 39363076 + 91853056 = 6274^2 + 9584^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 964757 + ... + 964892.

It is an arithmetic number, because the mean of its divisors is an integer number (20261325).

Almost surely, 2^131216132 is an apocalyptic number.

It is an amenable number.

131216132 is a deficient number, since it is larger than the sum of its proper divisors (111919768).

131216132 is a wasteful number, since it uses less digits than its factorization.

131216132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1929670 (or 1929668 counting only the distinct ones).

The product of its digits is 216, while the sum is 20.

The square root of 131216132 is about 11454.9610213217. The cubic root of 131216132 is about 508.1544625050.

Adding to 131216132 its reverse (231612131), we get a palindrome (362828263).

The spelling of 131216132 in words is "one hundred thirty-one million, two hundred sixteen thousand, one hundred thirty-two".