131899712 has 56 divisors (see below), whose sum is σ = 300679104. Its totient is φ = 56236032.

The previous prime is 131899711. The next prime is 131899739. The reversal of 131899712 is 217998131.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is a self number, because there is not a number n which added to its sum of digits gives 131899712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131899711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101048 + ... + 102344.

Almost surely, 2^131899712 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 131899712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150339552).

131899712 is an abundant number, since it is smaller than the sum of its proper divisors (168779392).

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

131899712 is a wasteful number, since it uses less digits than its factorization.

131899712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1543 (or 1533 counting only the distinct ones).

The product of its digits is 27216, while the sum is 41.

The square root of 131899712 is about 11484.7599887851. The cubic root of 131899712 is about 509.0353571419.

The spelling of 131899712 in words is "one hundred thirty-one million, eight hundred ninety-nine thousand, seven hundred twelve".