131059521 has 6 divisors (see below), whose sum is σ = 189308210. Its totient is φ = 87373008.

The previous prime is 131059517. The next prime is 131059541. The reversal of 131059521 is 125950131.

131059521 is a `hidden beast` number, since 131 + 0 + 5 + 9 + 521 = 666.

It can be written as a sum of positive squares in only one way, i.e., 124010496 + 7049025 = 11136^2 + 2655^2 .

It is not a de Polignac number, because 131059521 - 2² = 131059517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131059541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7281076 + ... + 7281093.

Almost surely, 2^131059521 is an apocalyptic number.

It is an amenable number.

131059521 is a deficient number, since it is larger than the sum of its proper divisors (58248689).

131059521 is a wasteful number, since it uses less digits than its factorization.

131059521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14562175 (or 14562172 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 27.

The square root of 131059521 is about 11448.1230339301. The cubic root of 131059521 is about 507.9522153681.

The spelling of 131059521 in words is "one hundred thirty-one million, fifty-nine thousand, five hundred twenty-one".