131456646 has 12 divisors (see below), whose sum is σ = 284822772. Its totient is φ = 43818876.

The previous prime is 131456621. The next prime is 131456657. The reversal of 131456646 is 646654131.

It is a happy number.

131456646 is a `hidden beast` number, since 1 + 3 + 1 + 4 + 5 + 6 + 646 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 131456646.

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 5 ways as a sum of consecutive naturals, for example, 3651556 + ... + 3651591.

It is an arithmetic number, because the mean of its divisors is an integer number (23735231).

Almost surely, 2^131456646 is an apocalyptic number.

131456646 is an abundant number, since it is smaller than the sum of its proper divisors (153366126).

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

131456646 is a wasteful number, since it uses less digits than its factorization.

131456646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7303155 (or 7303152 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 131456646 is about 11465.4544611193. The cubic root of 131456646 is about 508.4647487042.

It can be divided in two parts, 13145 and 6646, that added together give a palindrome (19791).

The spelling of 131456646 in words is "one hundred thirty-one million, four hundred fifty-six thousand, six hundred forty-six".