131516646 has 8 divisors (see below), whose sum is σ = 263033304. Its totient is φ = 43838880.

The previous prime is 131516639. The next prime is 131516647. The reversal of 131516646 is 646615131.

It is a sphenic number, since it is the product of 3 distinct primes.

131516646 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131516647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10959715 + ... + 10959726.

It is an arithmetic number, because the mean of its divisors is an integer number (32879163).

Almost surely, 2^131516646 is an apocalyptic number.

131516646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

131516646 is a wasteful number, since it uses less digits than its factorization.

131516646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21919446.

The product of its digits is 12960, while the sum is 33.

The square root of 131516646 is about 11468.0707183031. The cubic root of 131516646 is about 508.5420954836.

The spelling of 131516646 in words is "one hundred thirty-one million, five hundred sixteen thousand, six hundred forty-six".