131478282 has 48 divisors (see below), whose sum is σ = 316399680. Its totient is φ = 40452048.

The previous prime is 131478251. The next prime is 131478287. The reversal of 131478282 is 282874131.

It is not an unprimeable number, because it can be changed into a prime (131478287) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1923 + ... + 16329.

It is an arithmetic number, because the mean of its divisors is an integer number (6591660).

Almost surely, 2^131478282 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131478282, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158199840).

131478282 is an abundant number, since it is smaller than the sum of its proper divisors (184921398).

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

131478282 is a wasteful number, since it uses less digits than its factorization.

131478282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14444 (or 14425 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 131478282 is about 11466.3979522778. The cubic root of 131478282 is about 508.4926426655.

The spelling of 131478282 in words is "one hundred thirty-one million, four hundred seventy-eight thousand, two hundred eighty-two".