131812704 has 144 divisors (see below), whose sum is σ = 400392720. Its totient is φ = 42163200.

The previous prime is 131812699. The next prime is 131812717. The reversal of 131812704 is 407218131.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2160834 + ... + 2160894.

It is an arithmetic number, because the mean of its divisors is an integer number (2780505).

Almost surely, 2^131812704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131812704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200196360).

131812704 is an abundant number, since it is smaller than the sum of its proper divisors (268580016).

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

131812704 is an equidigital number, since it uses as much as digits as its factorization.

131812704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 131812704 is about 11480.9713874741. The cubic root of 131812704 is about 508.9234036737.

The spelling of 131812704 in words is "one hundred thirty-one million, eight hundred twelve thousand, seven hundred four".