131965788 has 12 divisors (see below), whose sum is σ = 307920200. Its totient is φ = 43988592.

The previous prime is 131965741. The next prime is 131965793. The reversal of 131965788 is 887569131.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5498563 + ... + 5498586.

Almost surely, 2^131965788 is an apocalyptic number.

It is an amenable number.

131965788 is an abundant number, since it is smaller than the sum of its proper divisors (175954412).

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

131965788 is a wasteful number, since it uses less digits than its factorization.

131965788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10997156 (or 10997154 counting only the distinct ones).

The product of its digits is 362880, while the sum is 48.

The square root of 131965788 is about 11487.6363103991. The cubic root of 131965788 is about 509.1203444522.

The spelling of 131965788 in words is "one hundred thirty-one million, nine hundred sixty-five thousand, seven hundred eighty-eight".