131042646 has 24 divisors (see below), whose sum is σ = 324486864. Its totient is φ = 37440720.

The previous prime is 131042633. The next prime is 131042663. The reversal of 131042646 is 646240131.

131042646 is a `hidden beast` number, since 1 + 3 + 10 + 4 + 2 + 646 = 666.

It is a Curzon number.

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 11 ways as a sum of consecutive naturals, for example, 519885 + ... + 520136.

It is an arithmetic number, because the mean of its divisors is an integer number (13520286).

Almost surely, 2^131042646 is an apocalyptic number.

131042646 is an abundant number, since it is smaller than the sum of its proper divisors (193444218).

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

131042646 is a wasteful number, since it uses less digits than its factorization.

131042646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040036 (or 1040033 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 131042646 is about 11447.3859898232. The cubic root of 131042646 is about 507.9304134125.

Adding to 131042646 its reverse (646240131), we get a palindrome (777282777).

It can be divided in two parts, 1310 and 42646, that added together give a triangular number (43956 = T₂₉₆).

The spelling of 131042646 in words is "one hundred thirty-one million, forty-two thousand, six hundred forty-six".