131530386 has 16 divisors (see below), whose sum is σ = 283296384. Its totient is φ = 40470864.

The previous prime is 131530291. The next prime is 131530387. The reversal of 131530386 is 683035131.

It is not an unprimeable number, because it can be changed into a prime (131530387) 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, 843066 + ... + 843221.

It is an arithmetic number, because the mean of its divisors is an integer number (17706024).

Almost surely, 2^131530386 is an apocalyptic number.

131530386 is an abundant number, since it is smaller than the sum of its proper divisors (151765998).

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

131530386 is a wasteful number, since it uses less digits than its factorization.

131530386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686305.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 131530386 is about 11468.6697572125. The cubic root of 131530386 is about 508.5598045855.

The spelling of 131530386 in words is "one hundred thirty-one million, five hundred thirty thousand, three hundred eighty-six".