131287716 has 120 divisors (see below), whose sum is σ = 396639936. Its totient is φ = 37091520.

The previous prime is 131287711. The next prime is 131287747. The reversal of 131287716 is 617782131.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (131287711) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 242406 + ... + 242946.

Almost surely, 2^131287716 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 131287716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198319968).

131287716 is an abundant number, since it is smaller than the sum of its proper divisors (265352220).

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

131287716 is a wasteful number, since it uses less digits than its factorization.

131287716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671 (or 660 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 131287716 is about 11458.0851803432. The cubic root of 131287716 is about 508.2468523549.

The spelling of 131287716 in words is "one hundred thirty-one million, two hundred eighty-seven thousand, seven hundred sixteen".