131479686 has 80 divisors (see below), whose sum is σ = 320166000. Its totient is φ = 40087872.

The previous prime is 131479669. The next prime is 131479693. The reversal of 131479686 is 686974131.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 313585 + ... + 314003.

It is an arithmetic number, because the mean of its divisors is an integer number (4002075).

Almost surely, 2^131479686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131479686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160083000).

131479686 is an abundant number, since it is smaller than the sum of its proper divisors (188686314).

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

131479686 is a wasteful number, since it uses less digits than its factorization.

131479686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595 (or 586 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 131479686 is about 11466.4591744793. The cubic root of 131479686 is about 508.4944526505.

The spelling of 131479686 in words is "one hundred thirty-one million, four hundred seventy-nine thousand, six hundred eighty-six".