131132646 has 12 divisors (see below), whose sum is σ = 284120772. Its totient is φ = 43710876.

The previous prime is 131132627. The next prime is 131132647. The reversal of 131132646 is 646231131.

131132646 is a `hidden beast` number, since 1 + 3 + 1 + 13 + 2 + 646 = 666.

It is a super-2 number, since 2×131132646² = 34391541693922632, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131132647) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3642556 + ... + 3642591.

It is an arithmetic number, because the mean of its divisors is an integer number (23676731).

Almost surely, 2^131132646 is an apocalyptic number.

131132646 is an abundant number, since it is smaller than the sum of its proper divisors (152988126).

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

131132646 is a wasteful number, since it uses less digits than its factorization.

131132646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7285155 (or 7285152 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 131132646 is about 11451.3163435476. The cubic root of 131132646 is about 508.0466688892.

Adding to 131132646 its reverse (646231131), we get a palindrome (777363777).

The spelling of 131132646 in words is "one hundred thirty-one million, one hundred thirty-two thousand, six hundred forty-six".